Changes:
* update to new tcp stack
* fix zero values for ISS and IRS issue (see RFC 9293)
Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevets...@iopsys.eu>
Reviewed-by: Simon Glass <s...@chromium.org>
---
arch/sandbox/include/asm/eth.h | 4 +++
test/cmd/wget.c | 58 ++++++++++++++++------------------
2 files changed, 31 insertions(+), 31 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 7570c065a10..d51650d5854 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));
@@ -217,7 +213,7 @@ static int net_test_wget(struct unit_test_state *uts)
env_set("ethrotate", "no");
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_empty();
ut_assert_nextline("Packets received 5, Transfer Successful");
ut_assert_nextline("Bytes transferred = 32 (20 hex)");
--
2.45.2
