[U-Boot] [PATCH 1/3] Interface changes for adding TCP
From: Duncan Hare DuncanCHare@yahoo.com
This code has passed through patman.
Signed-off-by: Duncan Hare DuncanCHare@yahoo.com ---
include/net.h | 32 ++++++++++++++---- net/Kconfig | 5 +++ net/net.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++----------- net/ping.c | 9 ++---- 4 files changed, 115 insertions(+), 33 deletions(-)
diff --git a/include/net.h b/include/net.h index 455b48f6c7..27fef6771c 100644 --- a/include/net.h +++ b/include/net.h @@ -15,17 +15,26 @@ #include <asm/cache.h> #include <asm/byteorder.h> /* for nton* / ntoh* stuff */
-#define DEBUG_LL_STATE 0 /* Link local state machine changes */ -#define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */ -#define DEBUG_NET_PKT 0 /* Packets on info on the network at large */ +#define DEBUG_LL_STATE 0 /* Link local state machine changes */ +#define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */ +#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. * + * The nuber of buffers for TCP is used to calculate a static TCP window + * size, becuse TCP window size is a promise to the sending TCP to be able + * to buffer up to the window size of data. + * When the sending TCP has a window size of outstanding unacknowledged + * data, the sending TCP will stop sending. */
+#if defined(CONFIG_TCP) +#define CONFIG_SYS_RX_ETH_BUFFER 24 /* For TCP */ +#endif + #ifdef CONFIG_SYS_RX_ETH_BUFFER # define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER #else @@ -354,6 +363,8 @@ struct vlan_ethernet_hdr {
#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */ #define IPPROTO_UDP 17 /* User Datagram Protocol */ +#define IPPROTO_TCP 6 /* Transmission Control Protocol */ +
/* * Internet Protocol (IP) header. @@ -538,7 +549,7 @@ extern int net_restart_wrap; /* Tried all network devices */
enum proto_t { BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP, - TFTPSRV, TFTPPUT, LINKLOCAL + TFTPSRV, TFTPPUT, LINKLOCAL, WGET };
extern char net_boot_file_name[1024];/* Boot File name */ @@ -596,10 +607,10 @@ int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot); int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot);
/* Set IP header */ -void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source); +void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source, + u16 pkt_len, u8 prot); void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, - int sport, int len); - + int sport, int len); /** * compute_ip_checksum() - Compute IP checksum * @@ -670,9 +681,16 @@ static inline void net_send_packet(uchar *pkt, int len) * @param sport Source UDP port * @param payload_len Length of data after the UDP header */ +int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport, + int payload_len, int proto, u8 action, u32 tcp_seq_num, + u32 tcp_ack_num); + int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, int payload_len);
+int net_send_tcp_packet(int payload_len, int dport, int sport, u8 action, + u32 tcp_seq_num, u32 tcp_ack_num); + /* Processes a received packet */ void net_process_received_packet(uchar *in_packet, int len);
diff --git a/net/Kconfig b/net/Kconfig index 414c5497c7..625ad291bb 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -45,4 +45,9 @@ config BOOTP_VCI_STRING default "U-Boot.arm" if ARM default "U-Boot"
+config TCP + bool "Include Subset TCP stack for wget" + help + TCP protocol support for wget. + endif # if NET diff --git a/net/net.c b/net/net.c index 4259c9e321..79255c11eb 100644 --- a/net/net.c +++ b/net/net.c @@ -107,6 +107,12 @@ #if defined(CONFIG_CMD_SNTP) #include "sntp.h" #endif +#if defined(CONFIG_TCP) +#include "tcp.h" +#endif +#if defined(CONFIG_CMD_WGET) +#include "wget.h" +#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -181,6 +187,7 @@ int net_ntp_time_offset; static uchar net_pkt_buf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; /* Receive packets */ uchar *net_rx_packets[PKTBUFSRX]; + /* Current UDP RX packet handler */ static rxhand_f *udp_packet_handler; /* Current ARP RX packet handler */ @@ -381,6 +388,9 @@ void net_init(void)
/* Only need to setup buffer pointers once. */ first_call = 0; +#if defined(CONFIG_TCP) + tcp_set_tcp_state(TCP_CLOSED); +#endif }
net_init_loop(); @@ -484,6 +494,11 @@ restart: nfs_start(); break; #endif +#if defined(CONFIG_CMD_WGET) + case WGET: + wget_start(); + break; +#endif #if defined(CONFIG_CMD_CDP) case CDP: cdp_start(); @@ -777,11 +792,41 @@ void net_set_timeout_handler(ulong iv, thand_f *f) }
int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, - int payload_len) + int payload_len) +{ + return net_send_ip_packet(ether, dest, dport, sport, payload_len, + IPPROTO_UDP, 0, 0, 0); +} + +#if defined(CONFIG_TCP) +int net_send_tcp_packet(int payload_len, int dport, int sport, u8 action, + u32 tcp_seq_num, u32 tcp_ack_num) +{ + return net_send_ip_packet(net_server_ethaddr, net_server_ip, dport, + sport, payload_len, IPPROTO_TCP, action, + tcp_seq_num, tcp_ack_num); +} +#endif + +int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport, + int payload_len, int proto, u8 action, u32 tcp_seq_num, + u32 tcp_ack_num) { uchar *pkt; int eth_hdr_size; int pkt_hdr_size; + if (proto == IPPROTO_UDP) { + debug_cond(DEBUG_DEV_PKT, + "UDP Send (to=%pI4, from=%pI4, len=%d)\n", + &dest, &net_ip, payload_len); +#if defined(CONFIG_TCP) + + } else { + debug_cond(DEBUG_DEV_PKT, + "TCP Send (%pI4, %pI4, len=%d, A=%x)\n", + &dest, &net_ip, payload_len, action); +#endif + }
/* make sure the net_tx_packet is initialized (net_init() was called) */ assert(net_tx_packet != NULL); @@ -799,9 +844,21 @@ int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, pkt = (uchar *)net_tx_packet;
eth_hdr_size = net_set_ether(pkt, ether, PROT_IP); - pkt += eth_hdr_size; - net_set_udp_header(pkt, dest, dport, sport, payload_len); - pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE; +#if defined(CONFIG_TCP) + if (proto == IPPROTO_UDP) { +#endif + net_set_udp_header(pkt + eth_hdr_size, dest, + dport, sport, payload_len); + pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE; + +#if defined(CONFIG_TCP) + } else { + pkt_hdr_size = eth_hdr_size + + tcp_set_tcp_header(pkt + eth_hdr_size, dport, sport, + payload_len, action, + tcp_seq_num, tcp_ack_num); + } +#endif
/* if MAC address was not discovered yet, do an ARP request */ if (memcmp(ether, net_null_ethaddr, 6) == 0) { @@ -1157,9 +1214,6 @@ void net_process_received_packet(uchar *in_packet, int len) /* Can't deal with anything except IPv4 */ if ((ip->ip_hl_v & 0xf0) != 0x40) return; - /* Can't deal with IP options (headers != 20 bytes) */ - if ((ip->ip_hl_v & 0x0f) > 0x05) - return; /* Check the Checksum of the header */ if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) { debug("checksum bad\n"); @@ -1205,9 +1259,19 @@ void net_process_received_packet(uchar *in_packet, int len) * we send a tftp packet to a dead connection, or when * there is no server at the other end. */ + if (ip->ip_p == IPPROTO_ICMP) { receive_icmp(ip, len, src_ip, et); return; +#if defined(CONFIG_TCP) + } else if (ip->ip_p == IPPROTO_TCP) { + debug_cond(DEBUG_DEV_PKT, + "TCP PH (to=%pI4, from=%pI4, len=%d)\n", + &dst_ip, &src_ip, len); + + rxhand_tcp_f((union tcp_build_pkt *)ip, len); + return; +#endif } else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ return; } @@ -1365,8 +1429,7 @@ common: } /**********************************************************************/
-int -net_eth_hdr_size(void) +int net_eth_hdr_size(void) { ushort myvlanid;
@@ -1426,25 +1489,28 @@ int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot) } }
-void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source) +void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source, + u16 pkt_len, u8 prot) { struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
/* - * Construct an IP header. + * Construct an IP header. */ /* IP_HDR_SIZE / 4 (not including UDP) */ ip->ip_hl_v = 0x45; ip->ip_tos = 0; - ip->ip_len = htons(IP_HDR_SIZE); + ip->ip_len = htons(pkt_len); ip->ip_id = htons(net_ip_id++); - ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ + ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ ip->ip_ttl = 255; + ip->ip_p = prot; ip->ip_sum = 0; /* already in network byte order */ net_copy_ip((void *)&ip->ip_src, &source); /* already in network byte order */ net_copy_ip((void *)&ip->ip_dst, &dest); + ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); }
void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport, @@ -1460,11 +1526,8 @@ void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport, if (len & 1) pkt[IP_UDP_HDR_SIZE + len] = 0;
- net_set_ip_header(pkt, dest, net_ip); - ip->ip_len = htons(IP_UDP_HDR_SIZE + len); - ip->ip_p = IPPROTO_UDP; - ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); - + net_set_ip_header(pkt, dest, net_ip, IP_UDP_HDR_SIZE + len, + IPPROTO_UDP); ip->udp_src = htons(sport); ip->udp_dst = htons(dport); ip->udp_len = htons(UDP_HDR_SIZE + len); @@ -1485,7 +1548,8 @@ void copy_filename(char *dst, const char *src, int size)
#if defined(CONFIG_CMD_NFS) || \ defined(CONFIG_CMD_SNTP) || \ - defined(CONFIG_CMD_DNS) + defined(CONFIG_CMD_DNS) || \ + defined(CONFIG_CMD_WGET) /* * make port a little random (1024-17407) * This keeps the math somewhat trivial to compute, and seems to work with diff --git a/net/ping.c b/net/ping.c index 9508cf1160..254b646193 100644 --- a/net/ping.c +++ b/net/ping.c @@ -20,16 +20,11 @@ struct in_addr net_ping_ip; static void set_icmp_header(uchar *pkt, struct in_addr dest) { /* - * Construct an IP and ICMP header. + * Construct an ICMP header. */ - struct ip_hdr *ip = (struct ip_hdr *)pkt; struct icmp_hdr *icmp = (struct icmp_hdr *)(pkt + IP_HDR_SIZE);
- net_set_ip_header(pkt, dest, net_ip); - - ip->ip_len = htons(IP_ICMP_HDR_SIZE); - ip->ip_p = IPPROTO_ICMP; - ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE); + net_set_ip_header(pkt, dest, net_ip, IP_ICMP_HDR_SIZE, IPPROTO_ICMP);
icmp->type = ICMP_ECHO_REQUEST; icmp->code = 0;
Dear Duncan,
In message 20180224223615.14584-1-DH@synoia.com you wrote:
This code has passed through patman.
Oh, do you really think this is a good description of what this patch does? You can do better, I bet.
Best regards,
Wolfgang Denk
On Sun, Feb 25, 2018 at 2:54 AM, Wolfgang Denk wd@denx.de wrote:
Dear Duncan,
In message 20180224223615.14584-1-DH@synoia.com you wrote:
This code has passed through patman.
Oh, do you really think this is a good description of what this patch does? You can do better, I bet.
Hi Duncan,
I think you need to include comments about the patch that you would like to convey about it in the email, but not in the commit log in git, in the Commit-notes: section for patman to find.
From the patman README:
Commit-notes: blah blah blah blah more blah blah END Similar, but for a single commit (patch). These notes will appear immediately below the --- cut in the patch file. <<<<
Outside of that section, you need to include a detailed description of what the patch does and why. This is what Wolfgang is expecting to see.
Thanks, -Joe
Best regards,
Wolfgang Denk
-- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd@denx.de Faith may be defined briefly as an illogical belief in the occurence of the improbable. - H. L. Mencken _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
Hi Duncan,
In one of the patches in the series, you can add a "Series-version: n" tag that patman will see to keep the series straight. I think the last one you sent was v5, so this would be v6, and the followup series will be v7, if I'm following along correctly.
For each patch that you need to update as a result of feedback, you can add the following:
Series-changes: n - Guinea pig moved into its cage - Other changes ending with a blank line <blank line> <<<<
That makes it easier to keep track of high-level changes in each version.
On Sat, Feb 24, 2018 at 4:36 PM, DH@synoia.com wrote:
From: Duncan Hare DuncanCHare@yahoo.com
This code has passed through patman.
Signed-off-by: Duncan Hare DuncanCHare@yahoo.com
include/net.h | 32 ++++++++++++++---- net/Kconfig | 5 +++ net/net.c | 102 +++++++++++++++++++++++++++++++++++++++++++++++----------- net/ping.c | 9 ++---- 4 files changed, 115 insertions(+), 33 deletions(-)
diff --git a/include/net.h b/include/net.h index 455b48f6c7..27fef6771c 100644 --- a/include/net.h +++ b/include/net.h @@ -15,17 +15,26 @@ #include <asm/cache.h> #include <asm/byteorder.h> /* for nton* / ntoh* stuff */
-#define DEBUG_LL_STATE 0 /* Link local state machine changes */ -#define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */ -#define DEBUG_NET_PKT 0 /* Packets on info on the network at large */ +#define DEBUG_LL_STATE 0 /* Link local state machine changes */ +#define DEBUG_DEV_PKT 0 /* Packets or info directed to the device */ +#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 bufferalignment in memory.
The nuber of buffers for TCP is used to calculate a static TCP window
nuber -> number
size, becuse TCP window size is a promise to the sending TCP to be able
to buffer up to the window size of data.
When the sending TCP has a window size of outstanding unacknowledged*/
data, the sending TCP will stop sending.+#if defined(CONFIG_TCP) +#define CONFIG_SYS_RX_ETH_BUFFER 24 /* For TCP */ +#endif
#ifdef CONFIG_SYS_RX_ETH_BUFFER # define PKTBUFSRX CONFIG_SYS_RX_ETH_BUFFER #else @@ -354,6 +363,8 @@ struct vlan_ethernet_hdr {
#define IPPROTO_ICMP 1 /* Internet Control Message Protocol */ #define IPPROTO_UDP 17 /* User Datagram Protocol */ +#define IPPROTO_TCP 6 /* Transmission Control Protocol */
Don't need another blank line.
/*
Internet Protocol (IP) header.@@ -538,7 +549,7 @@ extern int net_restart_wrap; /* Tried all network devices */
enum proto_t { BOOTP, RARP, ARP, TFTPGET, DHCP, PING, DNS, NFS, CDP, NETCONS, SNTP,
TFTPSRV, TFTPPUT, LINKLOCAL
TFTPSRV, TFTPPUT, LINKLOCAL, WGET
Don't add this until the patch where you actually add wget.
};
extern char net_boot_file_name[1024];/* Boot File name */ @@ -596,10 +607,10 @@ int net_set_ether(uchar *xet, const uchar *dest_ethaddr, uint prot); int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot);
/* Set IP header */ -void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source); +void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source,
u16 pkt_len, u8 prot);void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport,
int sport, int len);
int sport, int len);/**
- compute_ip_checksum() - Compute IP checksum
@@ -670,9 +681,16 @@ static inline void net_send_packet(uchar *pkt, int len)
- @param sport Source UDP port
- @param payload_len Length of data after the UDP header
*/ +int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport,
int payload_len, int proto, u8 action, u32 tcp_seq_num,u32 tcp_ack_num);
Add the tcp-specific parameters in the second patch.
int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, int payload_len);
+int net_send_tcp_packet(int payload_len, int dport, int sport, u8 action,
u32 tcp_seq_num, u32 tcp_ack_num);
Wait until second patch.
/* Processes a received packet */ void net_process_received_packet(uchar *in_packet, int len);
diff --git a/net/Kconfig b/net/Kconfig index 414c5497c7..625ad291bb 100644 --- a/net/Kconfig +++ b/net/Kconfig @@ -45,4 +45,9 @@ config BOOTP_VCI_STRING default "U-Boot.arm" if ARM default "U-Boot"
+config TCP
bool "Include Subset TCP stack for wget"
Reword this so that it looks reasonable in the menu.
helpTCP protocol support for wget.
Wait until the second patch.
endif # if NET diff --git a/net/net.c b/net/net.c index 4259c9e321..79255c11eb 100644 --- a/net/net.c +++ b/net/net.c @@ -107,6 +107,12 @@ #if defined(CONFIG_CMD_SNTP) #include "sntp.h" #endif +#if defined(CONFIG_TCP) +#include "tcp.h" +#endif +#if defined(CONFIG_CMD_WGET) +#include "wget.h" +#endif
Don't include these until the correct patch.
DECLARE_GLOBAL_DATA_PTR;
@@ -181,6 +187,7 @@ int net_ntp_time_offset; static uchar net_pkt_buf[(PKTBUFSRX+1) * PKTSIZE_ALIGN + PKTALIGN]; /* Receive packets */ uchar *net_rx_packets[PKTBUFSRX];
/* Current UDP RX packet handler */ static rxhand_f *udp_packet_handler; /* Current ARP RX packet handler */ @@ -381,6 +388,9 @@ void net_init(void)
/* Only need to setup buffer pointers once. */ first_call = 0;+#if defined(CONFIG_TCP)
tcp_set_tcp_state(TCP_CLOSED);
This indentation looks off.
+#endif
Don't add until the second patch.
} net_init_loop();@@ -484,6 +494,11 @@ restart: nfs_start(); break; #endif +#if defined(CONFIG_CMD_WGET)
case WGET:wget_start();break;+#endif
Don't add until the 3rd patch.
#if defined(CONFIG_CMD_CDP) case CDP: cdp_start(); @@ -777,11 +792,41 @@ void net_set_timeout_handler(ulong iv, thand_f *f) }
int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport,
int payload_len)
int payload_len)+{
return net_send_ip_packet(ether, dest, dport, sport, payload_len,IPPROTO_UDP, 0, 0, 0);+}
+#if defined(CONFIG_TCP) +int net_send_tcp_packet(int payload_len, int dport, int sport, u8 action,
u32 tcp_seq_num, u32 tcp_ack_num)+{
return net_send_ip_packet(net_server_ethaddr, net_server_ip, dport,sport, payload_len, IPPROTO_TCP, action,tcp_seq_num, tcp_ack_num);+} +#endif
Don't add until the 2nd patch.
+int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport,
int payload_len, int proto, u8 action, u32 tcp_seq_num,u32 tcp_ack_num){ uchar *pkt; int eth_hdr_size; int pkt_hdr_size;
if (proto == IPPROTO_UDP) {debug_cond(DEBUG_DEV_PKT,"UDP Send (to=%pI4, from=%pI4, len=%d)\n",&dest, &net_ip, payload_len);+#if defined(CONFIG_TCP)
} else {debug_cond(DEBUG_DEV_PKT,"TCP Send (%pI4, %pI4, len=%d, A=%x)\n",&dest, &net_ip, payload_len, action);+#endif
Don't add until the second patch.
} /* make sure the net_tx_packet is initialized (net_init() was called) */ assert(net_tx_packet != NULL);@@ -799,9 +844,21 @@ int net_send_udp_packet(uchar *ether, struct in_addr dest, int dport, int sport, pkt = (uchar *)net_tx_packet;
eth_hdr_size = net_set_ether(pkt, ether, PROT_IP);
pkt += eth_hdr_size;net_set_udp_header(pkt, dest, dport, sport, payload_len);pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE;+#if defined(CONFIG_TCP)
if (proto == IPPROTO_UDP) {
It doesn't hurt to always check the protocol, so take this out of the ifdef.
+#endif
net_set_udp_header(pkt + eth_hdr_size, dest,dport, sport, payload_len);pkt_hdr_size = eth_hdr_size + IP_UDP_HDR_SIZE;+#if defined(CONFIG_TCP)
} else {pkt_hdr_size = eth_hdr_size +tcp_set_tcp_header(pkt + eth_hdr_size, dport, sport,payload_len, action,tcp_seq_num, tcp_ack_num);}+#endif
Don't add this until you are adding TCP in the second patch.
/* if MAC address was not discovered yet, do an ARP request */ if (memcmp(ether, net_null_ethaddr, 6) == 0) {@@ -1157,9 +1214,6 @@ void net_process_received_packet(uchar *in_packet, int len) /* Can't deal with anything except IPv4 */ if ((ip->ip_hl_v & 0xf0) != 0x40) return;
/* Can't deal with IP options (headers != 20 bytes) */if ((ip->ip_hl_v & 0x0f) > 0x05)return; /* Check the Checksum of the header */ if (!ip_checksum_ok((uchar *)ip, IP_HDR_SIZE)) { debug("checksum bad\n");@@ -1205,9 +1259,19 @@ void net_process_received_packet(uchar *in_packet, int len) * we send a tftp packet to a dead connection, or when * there is no server at the other end. */
if (ip->ip_p == IPPROTO_ICMP) { receive_icmp(ip, len, src_ip, et); return;+#if defined(CONFIG_TCP)
} else if (ip->ip_p == IPPROTO_TCP) {debug_cond(DEBUG_DEV_PKT,"TCP PH (to=%pI4, from=%pI4, len=%d)\n",&dst_ip, &src_ip, len);rxhand_tcp_f((union tcp_build_pkt *)ip, len);return;+#endif
Don't add this until you are adding TCP in the second patch.
} else if (ip->ip_p != IPPROTO_UDP) { /* Only UDP packets */ return; }@@ -1365,8 +1429,7 @@ common: } /**********************************************************************/
-int -net_eth_hdr_size(void) +int net_eth_hdr_size(void) { ushort myvlanid;
@@ -1426,25 +1489,28 @@ int net_update_ether(struct ethernet_hdr *et, uchar *addr, uint prot) } }
-void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source) +void net_set_ip_header(uchar *pkt, struct in_addr dest, struct in_addr source,
u16 pkt_len, u8 prot){ struct ip_udp_hdr *ip = (struct ip_udp_hdr *)pkt;
/*
* Construct an IP header.
* Construct an IP header. */ /* IP_HDR_SIZE / 4 (not including UDP) */ ip->ip_hl_v = 0x45; ip->ip_tos = 0;
ip->ip_len = htons(IP_HDR_SIZE);
ip->ip_len = htons(pkt_len); ip->ip_id = htons(net_ip_id++);
ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */
ip->ip_off = htons(IP_FLAGS_DFRAG); /* Don't fragment */ ip->ip_ttl = 255;ip->ip_p = prot; ip->ip_sum = 0; /* already in network byte order */ net_copy_ip((void *)&ip->ip_src, &source); /* already in network byte order */ net_copy_ip((void *)&ip->ip_dst, &dest);ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);}
void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport, @@ -1460,11 +1526,8 @@ void net_set_udp_header(uchar *pkt, struct in_addr dest, int dport, int sport, if (len & 1) pkt[IP_UDP_HDR_SIZE + len] = 0;
net_set_ip_header(pkt, dest, net_ip);ip->ip_len = htons(IP_UDP_HDR_SIZE + len);ip->ip_p = IPPROTO_UDP;ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);
net_set_ip_header(pkt, dest, net_ip, IP_UDP_HDR_SIZE + len,IPPROTO_UDP); ip->udp_src = htons(sport); ip->udp_dst = htons(dport); ip->udp_len = htons(UDP_HDR_SIZE + len);@@ -1485,7 +1548,8 @@ void copy_filename(char *dst, const char *src, int size)
#if defined(CONFIG_CMD_NFS) || \ defined(CONFIG_CMD_SNTP) || \
defined(CONFIG_CMD_DNS)
defined(CONFIG_CMD_DNS) || \defined(CONFIG_CMD_WGET)
Don't add this until you are adding wget.
/*
- make port a little random (1024-17407)
- This keeps the math somewhat trivial to compute, and seems to work with
diff --git a/net/ping.c b/net/ping.c index 9508cf1160..254b646193 100644 --- a/net/ping.c +++ b/net/ping.c @@ -20,16 +20,11 @@ struct in_addr net_ping_ip; static void set_icmp_header(uchar *pkt, struct in_addr dest) { /*
* Construct an IP and ICMP header.
* Construct an ICMP header. */
struct ip_hdr *ip = (struct ip_hdr *)pkt; struct icmp_hdr *icmp = (struct icmp_hdr *)(pkt + IP_HDR_SIZE);net_set_ip_header(pkt, dest, net_ip);ip->ip_len = htons(IP_ICMP_HDR_SIZE);ip->ip_p = IPPROTO_ICMP;ip->ip_sum = compute_ip_checksum(ip, IP_HDR_SIZE);
net_set_ip_header(pkt, dest, net_ip, IP_ICMP_HDR_SIZE, IPPROTO_ICMP); icmp->type = ICMP_ECHO_REQUEST; icmp->code = 0;-- 2.11.0
U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot
participants (3)
-
DH＠synoia.com -
Joe Hershberger -
Wolfgang Denk