add external lwIP library as a git submodule. Use STABLE-2_2_0_RELEASE tag.

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- .gitmodules | 3 +++ net/lwip/lwip-external | 1 + 2 files changed, 4 insertions(+) create mode 100644 .gitmodules create mode 160000 net/lwip/lwip-external

diff --git a/.gitmodules b/.gitmodules new file mode 100644 index 0000000000..245ecff585 --- /dev/null +++ b/.gitmodules @@ -0,0 +1,3 @@ +[submodule "lwip"] + path = net/lwip/lwip-external + url = https://git.savannah.nongnu.org/git/lwip.git diff --git a/net/lwip/lwip-external b/net/lwip/lwip-external new file mode 160000 index 0000000000..0a0452b2c3 --- /dev/null +++ b/net/lwip/lwip-external @@ -0,0 +1 @@ +Subproject commit 0a0452b2c39bdd91e252aef045c115f88f6ca773

Add initial documentation of lwIP network IP stack integration to the U-Boot (net_lwip.rst).

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Ilias Apalodimas ilias.apalodimas@linaro.org --- doc/develop/index.rst | 1 + doc/develop/net_lwip.rst | 75 ++++++++++++++++++++++++++++++++++++++++ 2 files changed, 76 insertions(+) create mode 100644 doc/develop/net_lwip.rst

diff --git a/doc/develop/index.rst b/doc/develop/index.rst index 5b230d0321..4764990f25 100644 --- a/doc/develop/index.rst +++ b/doc/develop/index.rst @@ -48,6 +48,7 @@ Implementation spl falcon uefi/index + net_lwip vbe version

diff --git a/doc/develop/net_lwip.rst b/doc/develop/net_lwip.rst new file mode 100644 index 0000000000..a77ab60d0f --- /dev/null +++ b/doc/develop/net_lwip.rst @@ -0,0 +1,75 @@ +.. SPDX-License-Identifier: GPL-2.0+ + +lwIP IP stack integration for U-Boot +==================================== + +Intro +----- + +lwIP is a library implementing network protocols, which is commonly used +on embedded devices. + +https://savannah.nongnu.org/projects/lwip/ +lwIP  license: +lwIP is licensed under a BSD-style license: http://lwip.wikia.com/wiki/License. + +Main features include: + +* Protocols: IP, IPv6, ICMP, ND, MLD, UDP, TCP, IGMP, ARP, PPPoS, PPPoE + +* DHCP client, DNS client (incl. mDNS hostname resolver), + AutoIP/APIPA (Zeroconf), SNMP agent (v1, v2c, v3, private MIB support + & MIB compiler) + +* APIs: specialized APIs for enhanced performance, optional Berkeley-alike + socket API + +* Extended features: IP forwarding over multiple network interfaces, TCP + congestion control, RTT estimation and fast recovery/fast retransmit + +* Addon applications: HTTP(S) server, SNTP client, SMTP(S) client, ping, + NetBIOS nameserver, mDNS responder, MQTT client, TFTP server + +U-Boot implementation details +----------------------------- + +1. In general we can build lwIP as a library and link it against U-Boot or + compile it in the U-Boot tree in the same way as other U-Boot files. There + are few reasons why second variant was selected: lwIP is very customizable + with defines for features, memory size, types of allocation, some internal + types and platform specific code. It turned out easier to enable/disable + debug which is also done with defines, and is needed periodically. + +2. lwIP has 2 APIs - raw mode and sequential (as lwIP names it, or socket API + as we name it in Linux). For now only raw API is supported. + +In raw IP mode a callback function for RX path is registered and will be called +when packet is passed to the IP stack and is ready for the application. + +One example is the unmodified working ping example from lwip sources which +registered the callback: + +.. code-block:: c + + ping_pcb = raw_new(IP_PROTO_ICMP); + raw_recv(ping_pcb, ping_recv, NULL); <- ping_recv is app callback. + raw_bind(ping_pcb, IP_ADDR_ANY) + +3.  Input and output + +RX packet path is injected to U-Boot eth_rx() polling loop and TX patch is in +eth_send() accordingly. That way we can leave the driver code unmodified and +consume packets once they are ready. So we do not touch any drivers code and +just eat packets when they are ready. + +U-Boot lwIP Applications +======================== + +.. kernel-doc:: include/net/lwip.h + :internal: + +lwIP API to control polling loop +================================ + +.. kernel-doc:: include/net/ulwip.h + :internal:

U-Boot recently got support for an alternative network stack using LWIP. Replace dns command with the LWIP variant while keeping the output and error messages identical.

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- include/net/lwip.h | 19 +++++++++++ net/lwip/Makefile | 2 ++ net/lwip/apps/dns/lwip-dns.c | 63 ++++++++++++++++++++++++++++++++++++ 3 files changed, 84 insertions(+) create mode 100644 include/net/lwip.h create mode 100644 net/lwip/apps/dns/lwip-dns.c

diff --git a/include/net/lwip.h b/include/net/lwip.h new file mode 100644 index 0000000000..ab3db1a214 --- /dev/null +++ b/include/net/lwip.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +int do_lwip_dns(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]); + +/** + * ulwip_dns() - creates the DNS request to resolve a domain host name + * + * This function creates the DNS request to resolve a domain host name. Function + * can return immediately if previous request was cached or it might require + * entering the polling loop for a request to a remote server. + * + * @name: dns name to resolve + * @varname: (optional) U-Boot variable name to store the result + * Returns: ERR_OK(0) for fetching entry from the cache + * -EINPROGRESS success, can go to the polling loop + * Other value < 0, if error + */ +int ulwip_dns(char *name, char *varname); diff --git a/net/lwip/Makefile b/net/lwip/Makefile index 3fd5d34564..5d8d5527c6 100644 --- a/net/lwip/Makefile +++ b/net/lwip/Makefile @@ -62,3 +62,5 @@ obj-$(CONFIG_NET) += lwip-external/src/netif/ethernet.o

obj-$(CONFIG_NET) += port/if.o obj-$(CONFIG_NET) += port/sys-arch.o + +obj-y += apps/dns/lwip-dns.o diff --git a/net/lwip/apps/dns/lwip-dns.c b/net/lwip/apps/dns/lwip-dns.c new file mode 100644 index 0000000000..3ee6e24ef4 --- /dev/null +++ b/net/lwip/apps/dns/lwip-dns.c @@ -0,0 +1,63 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * (C) Copyright 2023 Linaro Ltd. maxim.uvarov@linaro.org + */ + +#include <common.h> +#include <command.h> +#include <console.h> + +#include <lwip/dns.h> +#include <lwip/ip_addr.h> + +#include <net/ulwip.h> + +static void dns_found_cb(const char *name, const ip_addr_t *ipaddr, void *callback_arg) +{ + char *varname = (char *)callback_arg; + char *ipstr = ip4addr_ntoa(ipaddr); + + if (varname) + env_set(varname, ipstr); + log_info("resolved %s to %s\n", name, ipstr); + ulwip_exit(0); +} + +int ulwip_dns(char *name, char *varname) +{ + int err; + ip_addr_t ipaddr; /* not used */ + ip_addr_t dns1; + ip_addr_t dns2; + char *dnsenv = env_get("dnsip"); + char *dns2env = env_get("dnsip2"); + + if (!dnsenv && !dns2env) { + log_err("nameserver is not set with dnsip and dnsip2 vars\n"); + return -ENOENT; + } + + if (!dnsenv) + log_warning("dnsip var is not set\n"); + if (!dns2env) + log_warning("dnsip2 var is not set\n"); + + dns_init(); + + if (ipaddr_aton(dnsenv, &dns1)) + dns_setserver(0, &dns1); + + if (dns2env && ipaddr_aton(dns2env, &dns2)) + dns_setserver(1, &dns2); + + err = dns_gethostbyname(name, &ipaddr, dns_found_cb, varname); + if (err == ERR_OK) + dns_found_cb(name, &ipaddr, varname); + + /* convert lwIP ERR_INPROGRESS to U-Boot -EINPROGRESS */ + if (err == ERR_INPROGRESS) + err = -EINPROGRESS; + + return err; +}

U-Boot recently got support for an alternative network stack using LWIP. Replace wget command with the LWIP variant while keeping the output and error messages identical.

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- include/net/lwip.h | 14 +++++ net/lwip/Makefile | 1 + net/lwip/apps/http/Makefile | 6 ++ net/lwip/apps/http/lwip-wget.c | 105 +++++++++++++++++++++++++++++++++ 4 files changed, 126 insertions(+) create mode 100644 net/lwip/apps/http/Makefile create mode 100644 net/lwip/apps/http/lwip-wget.c

diff --git a/include/net/lwip.h b/include/net/lwip.h index 11389bb038..85f08343fd 100644 --- a/include/net/lwip.h +++ b/include/net/lwip.h @@ -42,3 +42,17 @@ int ulwip_dhcp(void); * Returns: 0 if success, !0 if error */ int ulwip_tftp(ulong addr, const char *filename); + +/** + * ulwip_wget() - creates the HTTP request to download file + * + * This function creates the HTTP request to download file from url to the address + * specified in parameters. After this function you need to invoke the polling + * loop to process network communication. + * + * + * @addr: start address to download result + * @url: url in format http://host/url + * Returns: 0 for success, !0 if error + */ +int ulwip_wget(ulong addr, char *url); diff --git a/net/lwip/Makefile b/net/lwip/Makefile index b348e5ca31..61042862e1 100644 --- a/net/lwip/Makefile +++ b/net/lwip/Makefile @@ -66,3 +66,4 @@ obj-$(CONFIG_NET) += port/sys-arch.o obj-y += apps/dhcp/lwip-dhcp.o obj-y += apps/dns/lwip-dns.o obj-y += apps/tftp/ +obj-y += apps/http/ diff --git a/net/lwip/apps/http/Makefile b/net/lwip/apps/http/Makefile new file mode 100644 index 0000000000..ac0b3ede0d --- /dev/null +++ b/net/lwip/apps/http/Makefile @@ -0,0 +1,6 @@ +ccflags-y += -I$(srctree)/net/lwip/port/include +ccflags-y += -I$(srctree)/net/lwip/lwip-external/src/include -I$(srctree)/net/lwip +ccflags-y += -I$(srctree)/net/lwip/lwip-external/src/include/lwip/apps + +obj-$(CONFIG_CMD_WGET) += ../../lwip-external/src/apps/http/http_client.o +obj-$(CONFIG_CMD_WGET) += lwip-wget.o diff --git a/net/lwip/apps/http/lwip-wget.c b/net/lwip/apps/http/lwip-wget.c new file mode 100644 index 0000000000..7a7cc3273d --- /dev/null +++ b/net/lwip/apps/http/lwip-wget.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * (C) Copyright 2023 Linaro Ltd. maxim.uvarov@linaro.org + */ + +#include <common.h> +#include <command.h> +#include <console.h> +#include <vsprintf.h> + +#include "http_client.h" +#include <net/ulwip.h> + +static ulong daddr; +static httpc_connection_t settings; + +#define SERVER_NAME_SIZE 200 +#define HTTP_PORT_DEFAULT 80 + +static err_t httpc_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *pbuf, + err_t unused_err) +{ + struct pbuf *buf; + + if (!pbuf) + return ERR_BUF; + + for (buf = pbuf; buf != NULL; buf = buf->next) { + memcpy((void *)daddr, buf->payload, buf->len); + log_debug("downloaded chunk size %d, to addr 0x%lx\n", + buf->len, daddr); + daddr += buf->len; + } + + altcp_recved(pcb, pbuf->tot_len); + pbuf_free(pbuf); + return ERR_OK; +} + +static void httpc_result(void *arg, httpc_result_t httpc_result, u32_t rx_content_len, + u32_t srv_res, err_t err) +{ + if (httpc_result == HTTPC_RESULT_OK) { + log_info("\n%d bytes successfully downloaded.\n", rx_content_len); + env_set_hex("filesize", rx_content_len); + ulwip_exit(0); + } else { + log_err("\nhttp eroror: %d\n", httpc_result); + ulwip_exit(-1); + } +} + +/* http://hostname/url */ +static int parse_url(char *url, char *host, u16 *port) +{ + char *p, *pp; + + p = strstr(url, "http://"); + if (!p) + return -ENOENT; + + p += strlen("http://"); + + /* parse hostname */ + pp = strchr(p, '/'); + if (!pp) + return -ENOENT; + + if (p + SERVER_NAME_SIZE <= pp) + return -ENOENT; + + memcpy(host, p, pp - p); + host[pp - p + 1] = '\0'; + *port = HTTP_PORT_DEFAULT; + + return 0; +} + +int ulwip_wget(ulong addr, char *url) +{ + err_t err; + u16 port; + char server_name[SERVER_NAME_SIZE]; + httpc_state_t *connection; + + daddr = addr; + + err = parse_url(url, server_name, &port); + if (err) + return -ENOENT; + + log_info("downloading %s to addr 0x%lx\n", url, addr); + memset(&settings, 0, sizeof(settings)); + settings.result_fn = httpc_result; + err = httpc_get_file_dns(server_name, port, url, &settings, + httpc_recv, NULL, &connection); + if (err != ERR_OK) + return -EPERM; + + if (env_set_hex("fileaddr", addr)) + return -EACCES; + + return 0; +}

U-Boot recently got support for an alternative network stack using LWIP. Replace ping command with the LWIP variant while keeping the output and error messages identical. ping uses lwIP contrib/apps/ping/ping.c code. Custom timeout is used to get an error message on not modified example.

There is pending lwip patch: https://lists.nongnu.org/archive/html/lwip-devel/2023-09/msg00004.html https://savannah.nongnu.org/bugs/?64697 Once applied, more clean way can be used, to unset pending timers and exit from the ping application: net/lwip/apps/ping/ping.h: #define PING_RESULT(cond) { \ .. - raw_remove(pcb); \ + ping_destroy(); \

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- include/net/lwip.h | 15 +++++++++++++ net/lwip/Makefile | 1 + net/lwip/apps/ping/Makefile | 12 +++++++++++ net/lwip/apps/ping/lwip_ping.c | 39 ++++++++++++++++++++++++++++++++++ net/lwip/apps/ping/lwip_ping.h | 15 +++++++++++++ net/lwip/apps/ping/ping.h | 27 +++++++++++++++++++++++ 6 files changed, 109 insertions(+) create mode 100644 net/lwip/apps/ping/Makefile create mode 100644 net/lwip/apps/ping/lwip_ping.c create mode 100644 net/lwip/apps/ping/lwip_ping.h create mode 100644 net/lwip/apps/ping/ping.h

diff --git a/include/net/lwip.h b/include/net/lwip.h index 85f08343fd..1e92f9871c 100644 --- a/include/net/lwip.h +++ b/include/net/lwip.h @@ -2,6 +2,8 @@

int do_lwip_dns(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]); +int do_lwip_ping(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]);

/** * ulwip_dns() - creates the DNS request to resolve a domain host name @@ -56,3 +58,16 @@ int ulwip_tftp(ulong addr, const char *filename); * Returns: 0 for success, !0 if error */ int ulwip_wget(ulong addr, char *url); + +/** + * ulwip_ping - create the ping request + * + * This function creates the ping for address provided in parameters. + * After this function you need to invoke the polling + * loop to process network communication. + * + * + * @ping_addr: IP address to ping + * Returns: 0 for success, !0 if error +*/ +int ulwip_ping(char *ping_addr); diff --git a/net/lwip/Makefile b/net/lwip/Makefile index 61042862e1..5839d125c2 100644 --- a/net/lwip/Makefile +++ b/net/lwip/Makefile @@ -67,3 +67,4 @@ obj-y += apps/dhcp/lwip-dhcp.o obj-y += apps/dns/lwip-dns.o obj-y += apps/tftp/ obj-y += apps/http/ +obj-y += apps/ping/ diff --git a/net/lwip/apps/ping/Makefile b/net/lwip/apps/ping/Makefile new file mode 100644 index 0000000000..e567c0dc3e --- /dev/null +++ b/net/lwip/apps/ping/Makefile @@ -0,0 +1,12 @@ +ccflags-y += -I$(srctree)/net/lwip/port/include +ccflags-y += -I$(srctree)/net/lwip/lwip-external/src/include -I$(srctree)/net/lwip +ccflags-y += -I$(obj) + +# ping.c includes "ping.h", copy it to local directory, to override ping.h +.PHONY: $(obj)/ping.c +$(obj)/ping.o: $(obj)/ping.c +$(obj)/ping.c: + cp $(srctree)/net/lwip/lwip-external/contrib/apps/ping/ping.c $(obj)/ping.c + +obj-y += ping.o +obj-y += lwip_ping.o diff --git a/net/lwip/apps/ping/lwip_ping.c b/net/lwip/apps/ping/lwip_ping.c new file mode 100644 index 0000000000..ba02e7ed47 --- /dev/null +++ b/net/lwip/apps/ping/lwip_ping.c @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * (C) Copyright 2023 Linaro Ltd. maxim.uvarov@linaro.org + */ + +#include "lwip/opt.h" +#include "lwip/ip_addr.h" +#include "lwip/timeouts.h" +#include <linux/errno.h> +#include "ping.h" +#include "lwip_ping.h" + +#define PING_WAIT_MS 5000 + +static ip_addr_t ip_target; + +void ping_tmo(void *arg) +{ + log_err("ping_tmo: ping failed; host %s is not alive\n", + ipaddr_ntoa(&ip_target)); + ulwip_exit(1); +} + +int ulwip_ping(char *ping_addr) +{ + int err; + + err = ipaddr_aton(ping_addr, &ip_target); + if (!err) + return -ENOENT; + + sys_timeout(PING_WAIT_MS, ping_tmo, NULL); + + ping_init(&ip_target); + ping_send_now(); + + return 0; +} diff --git a/net/lwip/apps/ping/lwip_ping.h b/net/lwip/apps/ping/lwip_ping.h new file mode 100644 index 0000000000..0374f07d9e --- /dev/null +++ b/net/lwip/apps/ping/lwip_ping.h @@ -0,0 +1,15 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ + +/* + * (C) Copyright 2023 Linaro Ltd. maxim.uvarov@linaro.org + */ + +#ifndef LWIP_PING_H +#define LWIP_PING_H + +#include <lwip/ip_addr.h> + +void ping_raw_init(void); +void ping_send_now(void); + +#endif /* LWIP_PING_H */ diff --git a/net/lwip/apps/ping/ping.h b/net/lwip/apps/ping/ping.h new file mode 100644 index 0000000000..5dd631f2f7 --- /dev/null +++ b/net/lwip/apps/ping/ping.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#include <net/ulwip.h> +#include "lwip/ip_addr.h" + +void ping_tmo(void *arg); + +#define LWIP_DEBUG 1 /* ping_time is under ifdef*/ +#define PING_RESULT(cond) { \ + if (cond == 1) { \ + printf("host %s a alive\n", ipaddr_ntoa(addr)); \ + printf(" %"U32_F" ms\n", (sys_now() - ping_time)); \ + raw_remove(pcb); \ + sys_untimeout(ping_tmo, NULL); \ + sys_check_timeouts(); \ + ulwip_exit(0); \ + } else { \ + printf("ping failed; host %s in not alive\n",\ + ipaddr_ntoa(addr)); \ + raw_remove(pcb); \ + sys_untimeout(ping_tmo, NULL); \ + sys_check_timeouts(); \ + ulwip_exit(-1); \ + } \ + } while (0); + +void ping_init(const ip_addr_t *ping_addr);

ignore lwIP library code and reused files from the lwIP.

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- net/lwip/.gitignore | 8 ++++++++ 1 file changed, 8 insertions(+) create mode 100644 net/lwip/.gitignore

diff --git a/net/lwip/.gitignore b/net/lwip/.gitignore new file mode 100644 index 0000000000..7b5dacce90 --- /dev/null +++ b/net/lwip/.gitignore @@ -0,0 +1,8 @@ +lwip-external +apps/ping/ping.c +apps/http/http_client.c +apps/http/http_client.h +apps/tftp/tftp.c +apps/tftp/tftp_client.h +apps/tftp/tftp_common.h +apps/tftp/tftp_example.h

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- cmd/Makefile | 1 + cmd/net-lwip.c | 286 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 287 insertions(+) create mode 100644 cmd/net-lwip.c

diff --git a/cmd/Makefile b/cmd/Makefile index 9bebf321c3..6ab6b16aab 100644 --- a/cmd/Makefile +++ b/cmd/Makefile @@ -128,6 +128,7 @@ endif obj-$(CONFIG_CMD_MUX) += mux.o obj-$(CONFIG_CMD_NAND) += nand.o obj-$(CONFIG_CMD_NET) += net.o +obj-$(CONFIG_CMD_NET) += net-lwip.o obj-$(CONFIG_CMD_NVEDIT_EFI) += nvedit_efi.o obj-$(CONFIG_CMD_ONENAND) += onenand.o obj-$(CONFIG_CMD_OSD) += osd.o diff --git a/cmd/net-lwip.c b/cmd/net-lwip.c new file mode 100644 index 0000000000..90a18fb789 --- /dev/null +++ b/cmd/net-lwip.c @@ -0,0 +1,286 @@ +// SPDX-License-Identifier: GPL-2.0 + +/* + * (C) Copyright 2023 Maxim Uvarov, maxim.uvarov@linaro.org + */ + +#include <common.h> +#include <command.h> +#include <console.h> +#include <display_options.h> +#include <memalign.h> +#include <net.h> +#include <image.h> + +#include "net/lwip.h" +#include "net/ulwip.h" + +static int do_lwip_init(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + if (!ulwip_init()) + return CMD_RET_SUCCESS; + return CMD_RET_FAILURE; +} + +static void ulwip_timeout_handler(void) +{ + eth_halt(); + net_set_state(NETLOOP_FAIL); /* we did not get the reply */ + ulwip_loop_set(0); +} + +int ulwip_loop(void) +{ + int ret = CMD_RET_FAILURE; + + ulwip_loop_set(1); + if (!net_loop(LWIP)) + ret = CMD_RET_SUCCESS; + ulwip_loop_set(0); + return ret; +} + +#if defined(CONFIG_CMD_PING) +int do_lwip_ping(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int ret; + + if (argc < 2) + return CMD_RET_USAGE; + + ret = ulwip_init(); + if (ret) { + log_err("ulwip_init err %d\n", ret); + return CMD_RET_FAILURE; + } + + log_info("Using %s device\n", eth_get_name()); + log_info("pinging addr: %s\n", argv[1]); + + if (ulwip_ping(argv[1])) { + printf("ping init fail\n"); + return CMD_RET_FAILURE; + } + + return ulwip_loop(); +} +#endif /* CONFIG_CMD_PING */ + +#if defined(CONFIG_CMD_WGET) +int do_lwip_wget(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + char *url; + int ret; + + if (argc < 2) + return CMD_RET_USAGE; + + url = argv[1]; + + ret = ulwip_init(); + if (ret) { + log_err("ulwip_init err %d\n", ret); + return CMD_RET_FAILURE; + } + + ret = ulwip_wget(image_load_addr, url); + if (ret) { + log_err("lwip_wget err %d\n", ret); + return CMD_RET_FAILURE; + } + + + return ulwip_loop(); +} +#endif + +#if defined(CONFIG_CMD_TFTPBOOT) +int do_lwip_tftp(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + char *filename; + ulong addr; + char *end; + int ret; + + switch (argc) { + case 1: + filename = env_get("bootfile"); + break; + case 2: + /* + * Only one arg - accept two forms: + * Just load address, or just boot file name. The latter + * form must be written in a format which can not be + * mis-interpreted as a valid number. + */ + addr = hextoul(argv[1], &end); + if (end == (argv[1] + strlen(argv[1]))) { + image_load_addr = addr; + filename = env_get("bootfile"); + } else { + filename = argv[1]; + } + break; + case 3: + image_load_addr = hextoul(argv[1], NULL); + filename = argv[2]; + break; + default: + return CMD_RET_USAGE; + } + + ret = ulwip_init(); + if (ret) { + log_err("ulwip_init err %d\n", ret); + return CMD_RET_FAILURE; + } + + ret = ulwip_tftp(image_load_addr, filename); + if (ret) + return ret; + + return ulwip_loop(); +} +#endif /* CONFIG_CMD_TFTPBOOT */ + +#if defined(CONFIG_CMD_DHCP) +int do_lwip_dhcp(void) +{ + int ret; + char *filename; + + ret = ulwip_init(); + if (ret) { + log_err("ulwip_init err %d\n", ret); + return CMD_RET_FAILURE; + } + + ret = ulwip_dhcp(); + + net_set_timeout_handler(20000UL, ulwip_timeout_handler); + + ulwip_loop(); + if (IS_ENABLED(CONFIG_CMD_TFTPBOOT)) { + filename = env_get("bootfile"); + if (!filename) { + log_notice("no bootfile\n"); + return CMD_RET_SUCCESS; + } + + ret = ulwip_init(); + if (ret) { + log_err("ulwip_init err %d\n", ret); + return CMD_RET_FAILURE; + } + + net_set_timeout_handler(20000UL, ulwip_timeout_handler); + ulwip_tftp(image_load_addr, filename); + + ret = ulwip_loop(); + } + + return ret; +} + +static int _do_lwip_dhcp(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + return do_lwip_dhcp(); +} +#endif /* CONFIG_CMD_DHCP */ + +#if defined(CONFIG_CMD_DNS) +int do_lwip_dns(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + int ret; + char *name; + char *varname; + + if (argc == 1) + return CMD_RET_USAGE; + + name = argv[1]; + + if (argc == 3) + varname = argv[2]; + else + varname = NULL; + + ret = ulwip_init(); + if (ret) { + log_err("ulwip_init err %d\n", ret); + return CMD_RET_FAILURE; + } + + ret = ulwip_dns(name, varname); + if (ret == 0) + return CMD_RET_SUCCESS; + if (ret != -EINPROGRESS) + return CMD_RET_FAILURE; + + net_set_timeout_handler(1000UL, ulwip_timeout_handler); + + return ulwip_loop(); +} +#endif /* CONFIG_CMD_DNS */ + +static struct cmd_tbl cmds[] = { + U_BOOT_CMD_MKENT(init, 1, 0, do_lwip_init, + "initialize lwip stack", ""), +#if defined(CONFIG_CMD_PING) + U_BOOT_CMD_MKENT(ping, 2, 0, do_lwip_ping, + "send ICMP ECHO_REQUEST to network host", + "pingAddress"), +#endif +#if defined(CONFIG_CMD_WGET) + U_BOOT_CMD_MKENT(wget, 2, 0, do_lwip_wget, "", ""), +#endif +#if defined(CONFIG_CMD_TFTPBOOT) + U_BOOT_CMD_MKENT(tftp, 3, 0, do_lwip_tftp, + "boot image via network using TFTP protocol\n", + "[loadAddress] [[hostIPaddr:]bootfilename]"), +#endif +#if defined(CONFIG_CMD_DHCP) + U_BOOT_CMD_MKENT(dhcp, 1, 0, _do_lwip_dhcp, + "boot image via network using DHCP/TFTP protocol", + ""), +#endif +#if defined(CONFIG_CMD_DNS) + U_BOOT_CMD_MKENT(dns, 3, 0, do_lwip_dns, + "lookup dns name [and store address at variable]", + ""), +#endif +}; + +static int do_ops(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct cmd_tbl *cp; + + cp = find_cmd_tbl(argv[1], cmds, ARRAY_SIZE(cmds)); + + argc--; + argv++; + + if (cp == NULL || argc > cp->maxargs) + return CMD_RET_USAGE; + if (flag == CMD_FLAG_REPEAT && !cmd_is_repeatable(cp)) + return CMD_RET_SUCCESS; + + return cp->cmd(cmdtp, flag, argc, argv); +} + +U_BOOT_CMD( + lwip, 4, 1, do_ops, + "LWIP sub system", + "init - init LWIP\n" + "ping addr - pingAddress\n" + "wget http://IPadress/url/%5Cn" + "tftp [loadAddress] [[hostIPaddr:]bootfilename]\n" + "dhcp - boot image via network using DHCP/TFTP protocol\n" + );

Replace original commands: ping, tftp, dhcp and wget.

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- boot/bootmeth_efi.c | 18 +++++++--- boot/bootmeth_pxe.c | 21 ++++++----- cmd/net.c | 86 +++++---------------------------------------- cmd/pxe.c | 19 +++++----- include/net.h | 8 +++-- include/net/ulwip.h | 64 +++++++++++++++++++++++++++++++++ 6 files changed, 113 insertions(+), 103 deletions(-) create mode 100644 include/net/ulwip.h

diff --git a/boot/bootmeth_efi.c b/boot/bootmeth_efi.c index ae936c8daa..52399d627c 100644 --- a/boot/bootmeth_efi.c +++ b/boot/bootmeth_efi.c @@ -20,6 +20,8 @@ #include <mapmem.h> #include <mmc.h> #include <net.h> +#include <net/lwip.h> +#include <net/ulwip.h> #include <pxe_utils.h> #include <linux/sizes.h>

@@ -319,9 +321,7 @@ static int distro_efi_try_bootflow_files(struct udevice *dev,

static int distro_efi_read_bootflow_net(struct bootflow *bflow) { - char file_addr[17], fname[256]; - char *tftp_argv[] = {"tftp", file_addr, fname, NULL}; - struct cmd_tbl cmdtp = {}; /* dummy */ + char fname[256]; const char *addr_str, *fdt_addr_str; int ret, arch, size; ulong addr, fdt_addr; @@ -368,7 +368,6 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow) if (!fdt_addr_str) return log_msg_ret("fdt", -EINVAL); fdt_addr = hextoul(fdt_addr_str, NULL); - sprintf(file_addr, "%lx", fdt_addr);

/* We only allow the first prefix with PXE */ ret = distro_efi_get_fdt_name(fname, sizeof(fname), 0); @@ -379,7 +378,16 @@ static int distro_efi_read_bootflow_net(struct bootflow *bflow) if (!bflow->fdt_fname) return log_msg_ret("fil", -ENOMEM);

- if (!do_tftpb(&cmdtp, 0, 3, tftp_argv)) { + ret = ulwip_init(); + if (ret) + return log_msg_ret("ulwip_init", ret); + + ret = ulwip_tftp(fdt_addr, fname); + if (ret) + return log_msg_ret("ulwip_tftp", ret); + + ret = ulwip_loop(); + if (!ret) { bflow->fdt_size = env_get_hex("filesize", 0); bflow->fdt_addr = fdt_addr; } else { diff --git a/boot/bootmeth_pxe.c b/boot/bootmeth_pxe.c index 8d489a11aa..fc6aabaa18 100644 --- a/boot/bootmeth_pxe.c +++ b/boot/bootmeth_pxe.c @@ -21,6 +21,8 @@ #include <mapmem.h> #include <mmc.h> #include <net.h> +#include <net/ulwip.h> +#include <net/lwip.h> #include <pxe_utils.h>

static int extlinux_pxe_getfile(struct pxe_context *ctx, const char *file_path, @@ -116,18 +118,21 @@ static int extlinux_pxe_read_file(struct udevice *dev, struct bootflow *bflow, const char *file_path, ulong addr, ulong *sizep) { - char *tftp_argv[] = {"tftp", NULL, NULL, NULL}; - struct pxe_context *ctx = dev_get_priv(dev); - char file_addr[17]; ulong size; int ret;

- sprintf(file_addr, "%lx", addr); - tftp_argv[1] = file_addr; - tftp_argv[2] = (void *)file_path; + ret = ulwip_init(); + if (ret) + return log_msg_ret("ulwip_init", ret); + + ret = ulwip_tftp(addr, file_path); + if (ret) + return log_msg_ret("ulwip_tftp", ret); + + ret = ulwip_loop(); + if (ret) + return log_msg_ret("ulwip_loop", ret);

- if (do_tftpb(ctx->cmdtp, 0, 3, tftp_argv)) - return -ENOENT; ret = pxe_get_file_size(&size); if (ret) return log_msg_ret("tftp", ret); diff --git a/cmd/net.c b/cmd/net.c index d407d8320a..dc5a114309 100644 --- a/cmd/net.c +++ b/cmd/net.c @@ -22,6 +22,7 @@ #include <net/udp.h> #include <net/sntp.h> #include <net/ncsi.h> +#include <net/lwip.h>

static int netboot_common(enum proto_t, struct cmd_tbl *, int, char * const []);

@@ -40,19 +41,9 @@ U_BOOT_CMD( #endif

#ifdef CONFIG_CMD_TFTPBOOT -int do_tftpb(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) -{ - int ret; - - bootstage_mark_name(BOOTSTAGE_KERNELREAD_START, "tftp_start"); - ret = netboot_common(TFTPGET, cmdtp, argc, argv); - bootstage_mark_name(BOOTSTAGE_KERNELREAD_STOP, "tftp_done"); - return ret; -} - #if IS_ENABLED(CONFIG_IPV6) U_BOOT_CMD( - tftpboot, 4, 1, do_tftpb, + tftpboot, 4, 1, do_lwip_tftp, "boot image via network using TFTP protocol\n" "To use IPv6 add -ipv6 parameter or use IPv6 hostIPaddr framed " "with [] brackets", @@ -60,7 +51,7 @@ U_BOOT_CMD( ); #else U_BOOT_CMD( - tftpboot, 3, 1, do_tftpb, + tftpboot, 3, 1, do_lwip_tftp, "load file via network using TFTP protocol", "[loadAddress] [[hostIPaddr:]bootfilename]" ); @@ -139,7 +130,7 @@ U_BOOT_CMD(dhcp6, 3, 1, do_dhcp6, static int do_dhcp(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) { - return netboot_common(DHCP, cmdtp, argc, argv); + return do_lwip_dhcp(); }

U_BOOT_CMD( @@ -196,13 +187,11 @@ U_BOOT_CMD( #endif

#if defined(CONFIG_CMD_WGET) -static int do_wget(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[]) -{ - return netboot_common(WGET, cmdtp, argc, argv); -} +int do_lwip_wget(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]);

U_BOOT_CMD( - wget, 3, 1, do_wget, + wget, 3, 1, do_lwip_wget, "boot image via network using HTTP protocol", "[loadAddress] [[hostIPaddr:]path and image name]" ); @@ -456,28 +445,8 @@ static int netboot_common(enum proto_t proto, struct cmd_tbl *cmdtp, int argc, }

#if defined(CONFIG_CMD_PING) -static int do_ping(struct cmd_tbl *cmdtp, int flag, int argc, - char *const argv[]) -{ - if (argc < 2) - return CMD_RET_USAGE; - - net_ping_ip = string_to_ip(argv[1]); - if (net_ping_ip.s_addr == 0) - return CMD_RET_USAGE; - - if (net_loop(PING) < 0) { - printf("ping failed; host %s is not alive\n", argv[1]); - return CMD_RET_FAILURE; - } - - printf("host %s is alive\n", argv[1]); - - return CMD_RET_SUCCESS; -} - U_BOOT_CMD( - ping, 2, 1, do_ping, + ping, 2, 1, do_lwip_ping, "send ICMP ECHO_REQUEST to network host", "pingAddress" ); @@ -601,45 +570,8 @@ U_BOOT_CMD( #endif

#if defined(CONFIG_CMD_DNS) -int do_dns(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]) -{ - if (argc == 1) - return CMD_RET_USAGE; - - /* - * We should check for a valid hostname: - * - Each label must be between 1 and 63 characters long - * - the entire hostname has a maximum of 255 characters - * - only the ASCII letters 'a' through 'z' (case-insensitive), - * the digits '0' through '9', and the hyphen - * - cannot begin or end with a hyphen - * - no other symbols, punctuation characters, or blank spaces are - * permitted - * but hey - this is a minimalist implmentation, so only check length - * and let the name server deal with things. - */ - if (strlen(argv[1]) >= 255) { - printf("dns error: hostname too long\n"); - return CMD_RET_FAILURE; - } - - net_dns_resolve = argv[1]; - - if (argc == 3) - net_dns_env_var = argv[2]; - else - net_dns_env_var = NULL; - - if (net_loop(DNS) < 0) { - printf("dns lookup of %s failed, check setup\n", argv[1]); - return CMD_RET_FAILURE; - } - - return CMD_RET_SUCCESS; -} - U_BOOT_CMD( - dns, 3, 1, do_dns, + dns, 3, 1, do_lwip_dns, "lookup the IP of a hostname", "hostname [envvar]" ); diff --git a/cmd/pxe.c b/cmd/pxe.c index 677142520b..d44df428d2 100644 --- a/cmd/pxe.c +++ b/cmd/pxe.c @@ -8,6 +8,7 @@ #include <command.h> #include <fs.h> #include <net.h> +#include <net/lwip.h> #include <net6.h> #include <malloc.h>

@@ -29,21 +30,19 @@ const char *pxe_default_paths[] = { static int do_get_tftp(struct pxe_context *ctx, const char *file_path, char *file_addr, ulong *sizep) { - char *tftp_argv[] = {"tftp", NULL, NULL, NULL}; + ulong addr; + char *end; int ret; - int num_args;

- tftp_argv[1] = file_addr; - tftp_argv[2] = (void *)file_path; + addr = hextoul(file_addr, &end); + if (ctx->use_ipv6) { - tftp_argv[3] = USE_IP6_CMD_PARAM; - num_args = 4; - } else { - num_args = 3; + /* @todo: check and fix me, here */ }

- if (do_tftpb(ctx->cmdtp, 0, num_args, tftp_argv)) - return -ENOENT; + ret = ulwip_tftp(addr, file_path); + if (ret) + return log_msg_ret("tftp", ret);

ret = pxe_get_file_size(sizep); if (ret) diff --git a/include/net.h b/include/net.h index e254df7d7f..de7baeb121 100644 --- a/include/net.h +++ b/include/net.h @@ -54,8 +54,10 @@ struct in_addr { __be32 s_addr; };

+int do_lwip_dhcp(void); + /** - * do_tftpb - Run the tftpboot command + * do_lwip_tftp - Run the tftpboot command * * @cmdtp: Command information for tftpboot * @flag: Command flags (CMD_FLAG_...) @@ -63,7 +65,7 @@ struct in_addr { * @argv: List of arguments * Return: result (see enum command_ret_t) */ -int do_tftpb(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]); +int do_lwip_tftp(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[]);

/** * dhcp_run() - Run DHCP on the current ethernet device @@ -514,7 +516,7 @@ extern int net_restart_wrap; /* Tried all network devices */ enum proto_t { BOOTP, RARP, ARP, TFTPGET, DHCP, DHCP6, PING, PING6, DNS, NFS, CDP, NETCONS, SNTP, TFTPSRV, TFTPPUT, LINKLOCAL, FASTBOOT_UDP, FASTBOOT_TCP, - WOL, UDP, NCSI, WGET, RS + WOL, UDP, NCSI, WGET, RS, LWIP };

extern char net_boot_file_name[1024];/* Boot File name */ diff --git a/include/net/ulwip.h b/include/net/ulwip.h new file mode 100644 index 0000000000..8eac7aa130 --- /dev/null +++ b/include/net/ulwip.h @@ -0,0 +1,64 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +/** + * ulwip_init() - initialize lwIP network stack + * + * @return 0 if success, !0 if error + */ +int ulwip_init(void); + +/** + * ulwip_enabled() - check if lwIP network stack was initialized + * + * @return 1 lwip initialized, 0 if not yet initialized + */ +int ulwip_enabled(void); + +/** + * ulwip_in_loop() - lwIP controls packet net loop + * + * @return 1 lwIP owns packet loop, 0 lwip does not own packet loop + */ +int ulwip_in_loop(void); + +/** + * ulwip_loop_set() - make loop to be used by lwIP + * + * Function is used to make lwIP control network pool. + * + * @loop: 1. Rx packets go to lwIP 2. Rx packets go to the original stack. + */ +void ulwip_loop_set(int loop); + +/** + * ulwip_exit() - exit from lwIP with a return code + * + * Exit from lwIP application back to the U-Boot with specific error code. + * + * @err: Error code to return + */ +void ulwip_exit(int err); + +/** + * ulwip_poll() - polling function to feed lwIP with ethernet packet + * + * Function takes network packet and passes it to lwIP network stack + */ +void ulwip_poll(void); + +/** + * ulwip_app_get_err() - return error code from lwIP application + * + * @return error code + */ +int ulwip_app_get_err(void); + +/** + * ulwip_loop() - enter to packet polling loop + * + * When lwIP application did it's initialization stage, then it needs to enter + * to packet polling loop to grab rx packets. + * + * Returns: 0 if success, !0 if error + */ +int ulwip_loop(void);

current net.h has ethernet and protocol definitions. Protocol definitions overlap with lwIP protocol definitions and net.h can not be included from lwIP code. Splitting on logical blocks makes that work.

Signed-off-by: Maxim Uvarov maxim.uvarov@linaro.org --- include/net.h | 189 +-------------------------------------------- include/net/arp.h | 7 ++ include/net/eth.h | 190 ++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 201 insertions(+), 185 deletions(-) create mode 100644 include/net/arp.h create mode 100644 include/net/eth.h

diff --git a/include/net.h b/include/net.h index de7baeb121..780c51fab9 100644 --- a/include/net.h +++ b/include/net.h @@ -20,6 +20,7 @@ #include <time.h> #include <linux/if_ether.h> #include <rand.h> +#include <net/arp.h>

struct bd_info; struct cmd_tbl; @@ -30,25 +31,6 @@ struct udevice; #define DEBUG_NET_PKT 0 /* Packets on info on the network at large */ #define DEBUG_INT_STATE 0 /* Internal network state changes */

-/* - * The number of receive packet buffers, and the required packet buffer - * alignment in memory. - * - */ -#define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER -#define PKTALIGN ARCH_DMA_MINALIGN - -/* Number of packets processed together */ -#define ETH_PACKETS_BATCH_RECV 32 - -/* ARP hardware address length */ -#define ARP_HLEN 6 -/* - * The size of a MAC address in string form, each digit requires two chars - * and five separator characters to form '00:00:00:00:00:00'. - */ -#define ARP_HLEN_ASCII (ARP_HLEN * 2) + (ARP_HLEN - 1) - /* IPv4 addresses are always 32 bits in size */ struct in_addr { __be32 s_addr; @@ -112,150 +94,7 @@ typedef void rxhand_icmp_f(unsigned type, unsigned code, unsigned dport, */ typedef void thand_f(void);

-enum eth_state_t { - ETH_STATE_INIT, - ETH_STATE_PASSIVE, - ETH_STATE_ACTIVE -}; - -/** - * struct eth_pdata - Platform data for Ethernet MAC controllers - * - * @iobase: The base address of the hardware registers - * @enetaddr: The Ethernet MAC address that is loaded from EEPROM or env - * @phy_interface: PHY interface to use - see PHY_INTERFACE_MODE_... - * @max_speed: Maximum speed of Ethernet connection supported by MAC - * @priv_pdata: device specific plat - */ -struct eth_pdata { - phys_addr_t iobase; - unsigned char enetaddr[ARP_HLEN]; - int phy_interface; - int max_speed; - void *priv_pdata; -}; - -enum eth_recv_flags { - /* - * Check hardware device for new packets (otherwise only return those - * which are already in the memory buffer ready to process) - */ - ETH_RECV_CHECK_DEVICE = 1 << 0, -}; - -/** - * struct eth_ops - functions of Ethernet MAC controllers - * - * start: Prepare the hardware to send and receive packets - * send: Send the bytes passed in "packet" as a packet on the wire - * recv: Check if the hardware received a packet. If so, set the pointer to the - * packet buffer in the packetp parameter. If not, return an error or 0 to - * indicate that the hardware receive FIFO is empty. If 0 is returned, the - * network stack will not process the empty packet, but free_pkt() will be - * called if supplied - * free_pkt: Give the driver an opportunity to manage its packet buffer memory - * when the network stack is finished processing it. This will only be - * called when no error was returned from recv - optional - * stop: Stop the hardware from looking for packets - may be called even if - * state == PASSIVE - * mcast: Join or leave a multicast group (for TFTP) - optional - * write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux - * on some platforms like ARM). This function expects the - * eth_pdata::enetaddr field to be populated. The method can - * return -ENOSYS to indicate that this is not implemented for - this hardware - optional. - * read_rom_hwaddr: Some devices have a backup of the MAC address stored in a - * ROM on the board. This is how the driver should expose it - * to the network stack. This function should fill in the - * eth_pdata::enetaddr field - optional - * set_promisc: Enable or Disable promiscuous mode - * get_sset_count: Number of statistics counters - * get_string: Names of the statistic counters - * get_stats: The values of the statistic counters - */ -struct eth_ops { - int (*start)(struct udevice *dev); - int (*send)(struct udevice *dev, void *packet, int length); - int (*recv)(struct udevice *dev, int flags, uchar **packetp); - int (*free_pkt)(struct udevice *dev, uchar *packet, int length); - void (*stop)(struct udevice *dev); - int (*mcast)(struct udevice *dev, const u8 *enetaddr, int join); - int (*write_hwaddr)(struct udevice *dev); - int (*read_rom_hwaddr)(struct udevice *dev); - int (*set_promisc)(struct udevice *dev, bool enable); - int (*get_sset_count)(struct udevice *dev); - void (*get_strings)(struct udevice *dev, u8 *data); - void (*get_stats)(struct udevice *dev, u64 *data); -}; - -#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops) - -struct udevice *eth_get_dev(void); /* get the current device */ -/* - * The devname can be either an exact name given by the driver or device tree - * or it can be an alias of the form "eth%d" - */ -struct udevice *eth_get_dev_by_name(const char *devname); -unsigned char *eth_get_ethaddr(void); /* get the current device MAC */ - -/* Used only when NetConsole is enabled */ -int eth_is_active(struct udevice *dev); /* Test device for active state */ -int eth_init_state_only(void); /* Set active state */ -void eth_halt_state_only(void); /* Set passive state */ - -int eth_initialize(void); /* Initialize network subsystem */ -void eth_try_another(int first_restart); /* Change the device */ -void eth_set_current(void); /* set nterface to ethcur var */ - -int eth_get_dev_index(void); /* get the device index */ - -/** - * eth_env_set_enetaddr_by_index() - set the MAC address environment variable - * - * This sets up an environment variable with the given MAC address (@enetaddr). - * The environment variable to be set is defined by <@base_name><@index>addr. - * If @index is 0 it is omitted. For common Ethernet this means ethaddr, - * eth1addr, etc. - * - * @base_name: Base name for variable, typically "eth" - * @index: Index of interface being updated (>=0) - * @enetaddr: Pointer to MAC address to put into the variable - * Return: 0 if OK, other value on error - */ -int eth_env_set_enetaddr_by_index(const char *base_name, int index, - uchar *enetaddr); - - -/* - * Initialize USB ethernet device with CONFIG_DM_ETH - * Returns: - * 0 is success, non-zero is error status. - */ -int usb_ether_init(void); - -/* - * Get the hardware address for an ethernet interface . - * Args: - * base_name - base name for device (normally "eth") - * index - device index number (0 for first) - * enetaddr - returns 6 byte hardware address - * Returns: - * Return true if the address is valid. - */ -int eth_env_get_enetaddr_by_index(const char *base_name, int index, - uchar *enetaddr); - -int eth_init(void); /* Initialize the device */ -int eth_send(void *packet, int length); /* Send a packet */ - -#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER) -int eth_receive(void *packet, int length); /* Receive a packet*/ -extern void (*push_packet)(void *packet, int length); -#endif -int eth_rx(void); /* Check for received packets */ -void eth_halt(void); /* stop SCC */ -const char *eth_get_name(void); /* get name of current device */ -int eth_mcast_join(struct in_addr mcast_addr, int join); +#include <net/eth.h>

/**********************************************************************/ /* @@ -495,16 +334,6 @@ extern char net_root_path[CONFIG_BOOTP_MAX_ROOT_PATH_LEN]; /* Our root path */ /* Indicates whether the pxe path prefix / config file was specified in dhcp option */ extern char *pxelinux_configfile; /** END OF BOOTP EXTENTIONS **/ -extern u8 net_ethaddr[ARP_HLEN]; /* Our ethernet address */ -extern u8 net_server_ethaddr[ARP_HLEN]; /* Boot server enet address */ -extern struct in_addr net_ip; /* Our IP addr (0 = unknown) */ -extern struct in_addr net_server_ip; /* Server IP addr (0 = unknown) */ -extern uchar *net_tx_packet; /* THE transmit packet */ -extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */ -extern uchar *net_rx_packet; /* Current receive packet */ -extern int net_rx_packet_len; /* Current rx packet length */ -extern const u8 net_bcast_ethaddr[ARP_HLEN]; /* Ethernet broadcast address */ -extern const u8 net_null_ethaddr[ARP_HLEN];

#define VLAN_NONE 4095 /* untagged */ #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */ @@ -557,6 +386,8 @@ extern struct in_addr net_ntp_server; /* the ip address to NTP */ extern int net_ntp_time_offset; /* offset time from UTC */ #endif

+int eth_mcast_join(struct in_addr mcast_addr, int join); + /* Initialize the network adapter */ int net_init(void); int net_loop(enum proto_t); @@ -827,18 +658,6 @@ static inline void net_random_ethaddr(uchar *addr) addr[0] |= 0x02; /* set local assignment bit (IEEE802) */ }

-/** - * string_to_enetaddr() - Parse a MAC address - * - * Convert a string MAC address - * - * Implemented in lib/net_utils.c (built unconditionally) - * - * @addr: MAC address in aa:bb:cc:dd:ee:ff format, where each part is a 2-digit - * hex value - * @enetaddr: Place to put MAC address (6 bytes) - */ -void string_to_enetaddr(const char *addr, uint8_t *enetaddr);

/* Convert an IP address to a string */ void ip_to_string(struct in_addr x, char *s); diff --git a/include/net/arp.h b/include/net/arp.h new file mode 100644 index 0000000000..f614f0ef78 --- /dev/null +++ b/include/net/arp.h @@ -0,0 +1,7 @@ +/* ARP hardware address length */ +#define ARP_HLEN 6 +/* + * The size of a MAC address in string form, each digit requires two chars + * and five separator characters to form '00:00:00:00:00:00'. + */ +#define ARP_HLEN_ASCII (ARP_HLEN * 2) + (ARP_HLEN - 1) diff --git a/include/net/eth.h b/include/net/eth.h new file mode 100644 index 0000000000..17552bca81 --- /dev/null +++ b/include/net/eth.h @@ -0,0 +1,190 @@ +#include <net/arp.h> + +struct udevice; + +enum eth_state_t { + ETH_STATE_INIT, + ETH_STATE_PASSIVE, + ETH_STATE_ACTIVE +}; + +/** + * struct eth_pdata - Platform data for Ethernet MAC controllers + * + * @iobase: The base address of the hardware registers + * @enetaddr: The Ethernet MAC address that is loaded from EEPROM or env + * @phy_interface: PHY interface to use - see PHY_INTERFACE_MODE_... + * @max_speed: Maximum speed of Ethernet connection supported by MAC + * @priv_pdata: device specific plat + */ +struct eth_pdata { + phys_addr_t iobase; + unsigned char enetaddr[ARP_HLEN]; + int phy_interface; + int max_speed; + void *priv_pdata; +}; + +enum eth_recv_flags { + /* + * Check hardware device for new packets (otherwise only return those + * which are already in the memory buffer ready to process) + */ + ETH_RECV_CHECK_DEVICE = 1 << 0, +}; + +/** + * struct eth_ops - functions of Ethernet MAC controllers + * + * start: Prepare the hardware to send and receive packets + * send: Send the bytes passed in "packet" as a packet on the wire + * recv: Check if the hardware received a packet. If so, set the pointer to the + * packet buffer in the packetp parameter. If not, return an error or 0 to + * indicate that the hardware receive FIFO is empty. If 0 is returned, the + * network stack will not process the empty packet, but free_pkt() will be + * called if supplied + * free_pkt: Give the driver an opportunity to manage its packet buffer memory + * when the network stack is finished processing it. This will only be + * called when no error was returned from recv - optional + * stop: Stop the hardware from looking for packets - may be called even if + * state == PASSIVE + * mcast: Join or leave a multicast group (for TFTP) - optional + * write_hwaddr: Write a MAC address to the hardware (used to pass it to Linux + * on some platforms like ARM). This function expects the + * eth_pdata::enetaddr field to be populated. The method can + * return -ENOSYS to indicate that this is not implemented for + this hardware - optional. + * read_rom_hwaddr: Some devices have a backup of the MAC address stored in a + * ROM on the board. This is how the driver should expose it + * to the network stack. This function should fill in the + * eth_pdata::enetaddr field - optional + * set_promisc: Enable or Disable promiscuous mode + * get_sset_count: Number of statistics counters + * get_string: Names of the statistic counters + * get_stats: The values of the statistic counters + */ +struct eth_ops { + int (*start)(struct udevice *dev); + int (*send)(struct udevice *dev, void *packet, int length); + int (*recv)(struct udevice *dev, int flags, uchar **packetp); + int (*free_pkt)(struct udevice *dev, uchar *packet, int length); + void (*stop)(struct udevice *dev); + int (*mcast)(struct udevice *dev, const u8 *enetaddr, int join); + int (*write_hwaddr)(struct udevice *dev); + int (*read_rom_hwaddr)(struct udevice *dev); + int (*set_promisc)(struct udevice *dev, bool enable); + int (*get_sset_count)(struct udevice *dev); + void (*get_strings)(struct udevice *dev, u8 *data); + void (*get_stats)(struct udevice *dev, u64 *data); +}; + +#define eth_get_ops(dev) ((struct eth_ops *)(dev)->driver->ops) + +struct udevice *eth_get_dev(void); /* get the current device */ +/* + * The devname can be either an exact name given by the driver or device tree + * or it can be an alias of the form "eth%d" + */ +struct udevice *eth_get_dev_by_name(const char *devname); +unsigned char *eth_get_ethaddr(void); /* get the current device MAC */ + +/* Used only when NetConsole is enabled */ +int eth_is_active(struct udevice *dev); /* Test device for active state */ +int eth_init_state_only(void); /* Set active state */ +void eth_halt_state_only(void); /* Set passive state */ + +int eth_initialize(void); /* Initialize network subsystem */ +void eth_try_another(int first_restart); /* Change the device */ +void eth_set_current(void); /* set nterface to ethcur var */ + +int eth_get_dev_index(void); /* get the device index */ + +/** + * eth_env_set_enetaddr_by_index() - set the MAC address environment variable + * + * This sets up an environment variable with the given MAC address (@enetaddr). + * The environment variable to be set is defined by <@base_name><@index>addr. + * If @index is 0 it is omitted. For common Ethernet this means ethaddr, + * eth1addr, etc. + * + * @base_name: Base name for variable, typically "eth" + * @index: Index of interface being updated (>=0) + * @enetaddr: Pointer to MAC address to put into the variable + * Return: 0 if OK, other value on error + */ +int eth_env_set_enetaddr_by_index(const char *base_name, int index, + uchar *enetaddr); + + +/* + * Initialize USB ethernet device with CONFIG_DM_ETH + * Returns: + * 0 is success, non-zero is error status. + */ +int usb_ether_init(void); + +/* + * Get the hardware address for an ethernet interface . + * Args: + * base_name - base name for device (normally "eth") + * index - device index number (0 for first) + * enetaddr - returns 6 byte hardware address + * Returns: + * Return true if the address is valid. + */ +int eth_env_get_enetaddr_by_index(const char *base_name, int index, + uchar *enetaddr); + +int eth_init(void); /* Initialize the device */ +int eth_send(void *packet, int length); /* Send a packet */ + +#if defined(CONFIG_API) || defined(CONFIG_EFI_LOADER) +int eth_receive(void *packet, int length); /* Receive a packet*/ +extern void (*push_packet)(void *packet, int length); +#endif +int eth_rx(void); /* Check for received packets */ +void eth_halt(void); /* stop SCC */ +const char *eth_get_name(void); /* get name of current device */ + +/* + * The number of receive packet buffers, and the required packet buffer + * alignment in memory. + * + */ +#define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER +#define PKTALIGN ARCH_DMA_MINALIGN + +/* Number of packets processed together */ +#define ETH_PACKETS_BATCH_RECV 32 + +extern u8 net_ethaddr[ARP_HLEN]; /* Our ethernet address */ +extern u8 net_server_ethaddr[ARP_HLEN]; /* Boot server enet address */ +extern struct in_addr net_ip; /* Our IP addr (0 = unknown) */ +extern struct in_addr net_server_ip; /* Server IP addr (0 = unknown) */ +extern uchar *net_tx_packet; /* THE transmit packet */ +extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */ +extern uchar *net_rx_packet; /* Current receive packet */ +extern int net_rx_packet_len; /* Current rx packet length */ +extern const u8 net_bcast_ethaddr[ARP_HLEN]; /* Ethernet broadcast address */ +extern const u8 net_null_ethaddr[ARP_HLEN]; + +/** + * string_to_enetaddr() - Parse a MAC address + * + * Convert a string MAC address + * + * Implemented in lib/net_utils.c (built unconditionally) + * + * @addr: MAC address in aa:bb:cc:dd:ee:ff format, where each part is a 2-digit + * hex value + * @enetaddr: Place to put MAC address (6 bytes) + */ +void string_to_enetaddr(const char *addr, uint8_t *enetaddr); + +typedef struct ulwip { + bool loop; + int err; + bool init_done; +} ulwip; + +struct ulwip *eth_lwip_priv(struct udevice *current);