Changes: * update to new tcp stack * fix zero values for ISS and IRS issue (see RFC 9293)
Previously this patch also fix incorrect values for tcp_ack & tcp_seq, but the issue was fixed in * dbb6b5a: sandbox: fix wget test failure after fixing wget issue
Signed-off-by: Mikhail Kshevetskiy mikhail.kshevetskiy@iopsys.eu Reviewed-by: Simon Glass sjg@chromium.org --- arch/sandbox/include/asm/eth.h | 4 +++ test/cmd/wget.c | 58 ++++++++++++++++------------------ 2 files changed, 32 insertions(+), 30 deletions(-)
diff --git a/arch/sandbox/include/asm/eth.h b/arch/sandbox/include/asm/eth.h index f042a5f3b92..083a7371a3f 100644 --- a/arch/sandbox/include/asm/eth.h +++ b/arch/sandbox/include/asm/eth.h @@ -77,6 +77,8 @@ typedef int sandbox_eth_tx_hand_f(struct udevice *dev, void *pkt, * fake_host_hwaddr - MAC address of mocked machine * fake_host_ipaddr - IP address of mocked machine * disabled - Will not respond + * irs - tcp initial receive sequence + * iss - tcp initial send sequence * recv_packet_buffer - buffers of the packet returned as received * recv_packet_length - lengths of the packet returned as received * recv_packets - number of packets returned @@ -87,6 +89,8 @@ struct eth_sandbox_priv { uchar fake_host_hwaddr[ARP_HLEN]; struct in_addr fake_host_ipaddr; bool disabled; + u32 irs; + u32 iss; uchar * recv_packet_buffer[PKTBUFSRX]; int recv_packet_length[PKTBUFSRX]; int recv_packets; diff --git a/test/cmd/wget.c b/test/cmd/wget.c index fe26fee54c9..a90ca4fad8c 100644 --- a/test/cmd/wget.c +++ b/test/cmd/wget.c @@ -25,8 +25,7 @@
#define SHIFT_TO_TCPHDRLEN_FIELD(x) ((x) << 4) #define LEN_B_TO_DW(x) ((x) >> 2) - -int net_set_ack_options(union tcp_build_pkt *b); +#define GET_TCP_HDR_LEN_IN_BYTES(x) ((x) >> 2)
static int sb_arp_handler(struct udevice *dev, void *packet, unsigned int len) @@ -64,12 +63,14 @@ static int sb_syn_handler(struct udevice *dev, void *packet, eth_send = (void *)priv->recv_packet_buffer[priv->recv_packets]; memcpy(eth_send->et_dest, eth->et_src, ARP_HLEN); memcpy(eth_send->et_src, priv->fake_host_hwaddr, ARP_HLEN); + priv->irs = ntohl(tcp->tcp_seq); + priv->iss = ~priv->irs; /* just to differ from irs */ eth_send->et_protlen = htons(PROT_IP); tcp_send = (void *)eth_send + ETHER_HDR_SIZE; tcp_send->tcp_src = tcp->tcp_dst; tcp_send->tcp_dst = tcp->tcp_src; - tcp_send->tcp_seq = htonl(0); - tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1); + tcp_send->tcp_seq = htonl(priv->iss); + tcp_send->tcp_ack = htonl(priv->irs + 1); tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE)); tcp_send->tcp_flags = TCP_SYN | TCP_ACK; tcp_send->tcp_win = htons(PKTBUFSRX * TCP_MSS >> TCP_SCALE); @@ -104,13 +105,11 @@ static int sb_ack_handler(struct udevice *dev, void *packet, void *data; int pkt_len; int payload_len = 0; + u32 tcp_seq, tcp_ack; + int tcp_data_len; const char *payload1 = "HTTP/1.1 200 OK\r\n" "Content-Length: 30\r\n\r\n\r\n" "<html><body>Hi</body></html>\r\n"; - union tcp_build_pkt *b = (union tcp_build_pkt *)tcp; - const int recv_payload_len = len - net_set_ack_options(b) - IP_HDR_SIZE - ETHER_HDR_SIZE; - static int next_seq; - const int bottom_payload_len = 10;
/* Don't allow the buffer to overrun */ if (priv->recv_packets >= PKTBUFSRX) @@ -125,35 +124,32 @@ static int sb_ack_handler(struct udevice *dev, void *packet, tcp_send->tcp_dst = tcp->tcp_src; data = (void *)tcp_send + IP_TCP_HDR_SIZE;
- if (ntohl(tcp->tcp_seq) == 1 && ntohl(tcp->tcp_ack) == 1 && recv_payload_len == 0) { - // ignore ACK for three-way handshaking - return 0; - } else if (ntohl(tcp->tcp_seq) == 1 && ntohl(tcp->tcp_ack) == 1) { - // recv HTTP request message and reply top half data - tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack)); - tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + recv_payload_len); + tcp_seq = ntohl(tcp->tcp_seq) - priv->irs; + tcp_ack = ntohl(tcp->tcp_ack) - priv->iss; + tcp_data_len = len - ETHER_HDR_SIZE - IP_HDR_SIZE - GET_TCP_HDR_LEN_IN_BYTES(tcp->tcp_hlen);
- payload_len = strlen(payload1) - bottom_payload_len; - memcpy(data, payload1, payload_len); - tcp_send->tcp_flags = TCP_ACK; + if (tcp->tcp_flags & TCP_FIN) + tcp_data_len++;
- next_seq = ntohl(tcp_send->tcp_seq) + payload_len; - } else if (ntohl(tcp->tcp_ack) == next_seq) { - // reply bottom half data - const int top_payload_len = strlen(payload1) - bottom_payload_len; + tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack)); + tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + tcp_data_len);
- tcp_send->tcp_seq = htonl(next_seq); - tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + recv_payload_len); + if (tcp_seq == 1 && tcp_ack == 1) { + if (tcp_data_len == 0) { + /* no data, wait for GET request */ + return -1; + }
- payload_len = bottom_payload_len; - memcpy(data, payload1 + top_payload_len, payload_len); + /* reply to GET request */ + payload_len = strlen(payload1); + memcpy(data, payload1, payload_len); tcp_send->tcp_flags = TCP_ACK; - } else { - // close connection - tcp_send->tcp_seq = htonl(ntohl(tcp->tcp_ack)); - tcp_send->tcp_ack = htonl(ntohl(tcp->tcp_seq) + 1); + } else if (tcp_ack == 1 + strlen(payload1)) { payload_len = 0; tcp_send->tcp_flags = TCP_ACK | TCP_FIN; + } else if (tcp_ack == 2 + strlen(payload1)) { + payload_len = 0; + tcp_send->tcp_flags = TCP_ACK; }
tcp_send->tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE)); @@ -214,6 +210,8 @@ static int net_test_wget(struct unit_test_state *uts) env_set("loadaddr", "0x20000"); ut_assertok(run_command("wget ${loadaddr} 1.1.2.2:/index.html", 0)); ut_assert_nextline("HTTP/1.1 200 OK"); + ut_assert_nextline("Content-Length: 30"); + ut_assert_nextline(""); ut_assert_nextline("Packets received 5, Transfer Successful"); ut_assert_nextline("Bytes transferred = 32 (20 hex)");