no functional changes, just put connection specific data into a tcp_stream structure
Signed-off-by: Mikhail Kshevetskiy mikhail.kshevetskiy@iopsys.eu --- include/net/tcp.h | 37 +++++++- net/net.c | 11 ++- net/tcp.c | 231 +++++++++++++++++++++++----------------------- net/wget.c | 3 +- 4 files changed, 163 insertions(+), 119 deletions(-)
diff --git a/include/net/tcp.h b/include/net/tcp.h index c29d4ce24a7..14aee64cb1c 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -277,9 +277,40 @@ enum tcp_state { TCP_FIN_WAIT_2 };
-enum tcp_state tcp_get_tcp_state(void); -void tcp_set_tcp_state(enum tcp_state new_state); -int tcp_set_tcp_header(uchar *pkt, int dport, int sport, int payload_len, +/** + * struct tcp_stream - TCP data stream structure + * + * @state: TCP connection state + * + * @seq_init: Initial receive sequence number + * @ack_edge: Receive next + * + * @loc_timestamp: Local timestamp + * @rmt_timestamp: Remote timestamp + * + * @lost: Used for SACK + */ +struct tcp_stream { + /* TCP connection state */ + enum tcp_state state; + + u32 seq_init; + u32 ack_edge; + + /* TCP option timestamp */ + u32 loc_timestamp; + u32 rmt_timestamp; + + /* TCP sliding window control used to request re-TX */ + struct tcp_sack_v lost; +}; + +struct tcp_stream *tcp_stream_get(void); + +enum tcp_state tcp_get_tcp_state(struct tcp_stream *tcp); +void tcp_set_tcp_state(struct tcp_stream *tcp, enum tcp_state new_state); +int tcp_set_tcp_header(struct tcp_stream *tcp, uchar *pkt, int dport, + int sport, int payload_len, u8 action, u32 tcp_seq_num, u32 tcp_ack_num);
/** diff --git a/net/net.c b/net/net.c index 0fb2d250773..8f076fa18e3 100644 --- a/net/net.c +++ b/net/net.c @@ -416,7 +416,7 @@ int net_init(void) /* Only need to setup buffer pointers once. */ first_call = 0; if (IS_ENABLED(CONFIG_PROT_TCP)) - tcp_set_tcp_state(TCP_CLOSED); + tcp_set_tcp_state(tcp_stream_get(), TCP_CLOSED); }
return net_init_loop(); @@ -917,6 +917,9 @@ int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport, uchar *pkt; int eth_hdr_size; int pkt_hdr_size; +#if defined(CONFIG_PROT_TCP) + struct tcp_stream *tcp; +#endif
/* make sure the net_tx_packet is initialized (net_init() was called) */ assert(net_tx_packet != NULL); @@ -943,8 +946,12 @@ int net_send_ip_packet(uchar *ether, struct in_addr dest, int dport, int sport, break; #if defined(CONFIG_PROT_TCP) case IPPROTO_TCP: + tcp = tcp_stream_get(); + if (tcp == NULL) + return -EINVAL; + pkt_hdr_size = eth_hdr_size - + tcp_set_tcp_header(pkt + eth_hdr_size, dport, sport, + + tcp_set_tcp_header(tcp, pkt + eth_hdr_size, dport, sport, payload_len, action, tcp_seq_num, tcp_ack_num); break; diff --git a/net/tcp.c b/net/tcp.c index 228e1e4872c..80a161838f5 100644 --- a/net/tcp.c +++ b/net/tcp.c @@ -25,19 +25,8 @@ #include <net.h> #include <net/tcp.h>
-/* - * TCP sliding window control used by us to request re-TX - */ -static struct tcp_sack_v tcp_lost; - -/* TCP option timestamp */ -static u32 loc_timestamp; -static u32 rmt_timestamp; - -static u32 tcp_seq_init; -static u32 tcp_ack_edge; - static int tcp_activity_count; +static struct tcp_stream tcp_stream;
/* * TCP lengths are stored as a rounded up number of 32 bit words. @@ -49,9 +38,6 @@ static int tcp_activity_count; #define SHIFT_TO_TCPHDRLEN_FIELD(x) ((x) << 4) #define GET_TCP_HDR_LEN_IN_BYTES(x) ((x) >> 2)
-/* TCP connection state */ -static enum tcp_state current_tcp_state; - /* Current TCP RX packet handler */ static rxhand_tcp *tcp_packet_handler;
@@ -61,22 +47,30 @@ static inline s32 tcp_seq_cmp(u32 a, u32 b) }
/** - * tcp_get_tcp_state() - get current TCP state + * tcp_get_tcp_state() - get TCP stream state + * @tcp: tcp stream * - * Return: Current TCP state + * Return: TCP stream state */ -enum tcp_state tcp_get_tcp_state(void) +enum tcp_state tcp_get_tcp_state(struct tcp_stream *tcp) { - return current_tcp_state; + return tcp->state; }
/** - * tcp_set_tcp_state() - set current TCP state + * tcp_set_tcp_state() - set TCP stream state + * @tcp: tcp stream * @new_state: new TCP state */ -void tcp_set_tcp_state(enum tcp_state new_state) +void tcp_set_tcp_state(struct tcp_stream *tcp, + enum tcp_state new_state) { - current_tcp_state = new_state; + tcp->state = new_state; +} + +struct tcp_stream *tcp_stream_get(void) +{ + return &tcp_stream; }
static void dummy_handler(uchar *pkt, u16 dport, @@ -139,29 +133,30 @@ u16 tcp_set_pseudo_header(uchar *pkt, struct in_addr src, struct in_addr dest,
/** * net_set_ack_options() - set TCP options in acknowledge packets + * @tcp: tcp stream * @b: the packet * * Return: TCP header length */ -int net_set_ack_options(union tcp_build_pkt *b) +int net_set_ack_options(struct tcp_stream *tcp, union tcp_build_pkt *b) { b->sack.hdr.tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(LEN_B_TO_DW(TCP_HDR_SIZE));
b->sack.t_opt.kind = TCP_O_TS; b->sack.t_opt.len = TCP_OPT_LEN_A; - b->sack.t_opt.t_snd = htons(loc_timestamp); - b->sack.t_opt.t_rcv = rmt_timestamp; + b->sack.t_opt.t_snd = htons(tcp->loc_timestamp); + b->sack.t_opt.t_rcv = tcp->rmt_timestamp; b->sack.sack_v.kind = TCP_1_NOP; b->sack.sack_v.len = 0;
if (IS_ENABLED(CONFIG_PROT_TCP_SACK)) { - if (tcp_lost.len > TCP_OPT_LEN_2) { + if (tcp->lost.len > TCP_OPT_LEN_2) { debug_cond(DEBUG_DEV_PKT, "TCP ack opt lost.len %x\n", - tcp_lost.len); - b->sack.sack_v.len = tcp_lost.len; + tcp->lost.len); + b->sack.sack_v.len = tcp->lost.len; b->sack.sack_v.kind = TCP_V_SACK; - b->sack.sack_v.hill[0].l = htonl(tcp_lost.hill[0].l); - b->sack.sack_v.hill[0].r = htonl(tcp_lost.hill[0].r); + b->sack.sack_v.hill[0].l = htonl(tcp->lost.hill[0].l); + b->sack.sack_v.hill[0].r = htonl(tcp->lost.hill[0].r);
/* * These SACK structures are initialized with NOPs to @@ -169,17 +164,17 @@ int net_set_ack_options(union tcp_build_pkt *b) * SACK structures used for both header padding and * internally. */ - b->sack.sack_v.hill[1].l = htonl(tcp_lost.hill[1].l); - b->sack.sack_v.hill[1].r = htonl(tcp_lost.hill[1].r); - b->sack.sack_v.hill[2].l = htonl(tcp_lost.hill[2].l); - b->sack.sack_v.hill[2].r = htonl(tcp_lost.hill[2].r); + b->sack.sack_v.hill[1].l = htonl(tcp->lost.hill[1].l); + b->sack.sack_v.hill[1].r = htonl(tcp->lost.hill[1].r); + b->sack.sack_v.hill[2].l = htonl(tcp->lost.hill[2].l); + b->sack.sack_v.hill[2].r = htonl(tcp->lost.hill[2].r); b->sack.sack_v.hill[3].l = TCP_O_NOP; b->sack.sack_v.hill[3].r = TCP_O_NOP; }
b->sack.hdr.tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(ROUND_TCPHDR_LEN(TCP_HDR_SIZE + TCP_TSOPT_SIZE + - tcp_lost.len)); + tcp->lost.len)); } else { b->sack.sack_v.kind = 0; b->sack.hdr.tcp_hlen = SHIFT_TO_TCPHDRLEN_FIELD(ROUND_TCPHDR_LEN(TCP_HDR_SIZE + @@ -195,13 +190,14 @@ int net_set_ack_options(union tcp_build_pkt *b) }
/** - * net_set_ack_options() - set TCP options in SYN packets + * net_set_syn_options() - set TCP options in SYN packets + * @tcp: tcp stream * @b: the packet */ -void net_set_syn_options(union tcp_build_pkt *b) +void net_set_syn_options(struct tcp_stream *tcp, union tcp_build_pkt *b) { if (IS_ENABLED(CONFIG_PROT_TCP_SACK)) - tcp_lost.len = 0; + tcp->lost.len = 0;
b->ip.hdr.tcp_hlen = 0xa0;
@@ -220,14 +216,15 @@ void net_set_syn_options(union tcp_build_pkt *b) } b->ip.t_opt.kind = TCP_O_TS; b->ip.t_opt.len = TCP_OPT_LEN_A; - loc_timestamp = get_ticks(); - rmt_timestamp = 0; + tcp->loc_timestamp = get_ticks(); + tcp->rmt_timestamp = 0; b->ip.t_opt.t_snd = 0; b->ip.t_opt.t_rcv = 0; b->ip.end = TCP_O_END; }
-int tcp_set_tcp_header(uchar *pkt, int dport, int sport, int payload_len, +int tcp_set_tcp_header(struct tcp_stream *tcp, uchar *pkt, int dport, + int sport, int payload_len, u8 action, u32 tcp_seq_num, u32 tcp_ack_num) { union tcp_build_pkt *b = (union tcp_build_pkt *)pkt; @@ -250,21 +247,21 @@ int tcp_set_tcp_header(uchar *pkt, int dport, int sport, int payload_len, &net_server_ip, &net_ip, tcp_seq_num, tcp_ack_num); tcp_activity_count = 0; - net_set_syn_options(b); + net_set_syn_options(tcp, b); tcp_seq_num = 0; tcp_ack_num = 0; pkt_hdr_len = IP_TCP_O_SIZE; - if (current_tcp_state == TCP_SYN_SENT) { /* Too many SYNs */ + if (tcp->state == TCP_SYN_SENT) { /* Too many SYNs */ action = TCP_FIN; - current_tcp_state = TCP_FIN_WAIT_1; + tcp->state = TCP_FIN_WAIT_1; } else { - tcp_lost.len = TCP_OPT_LEN_2; - current_tcp_state = TCP_SYN_SENT; + tcp->lost.len = TCP_OPT_LEN_2; + tcp->state = TCP_SYN_SENT; } break; case TCP_SYN | TCP_ACK: case TCP_ACK: - pkt_hdr_len = IP_HDR_SIZE + net_set_ack_options(b); + pkt_hdr_len = IP_HDR_SIZE + net_set_ack_options(tcp, b); b->ip.hdr.tcp_flags = action; debug_cond(DEBUG_DEV_PKT, "TCP Hdr:ACK (%pI4, %pI4, s=%u, a=%u, A=%x)\n", @@ -277,20 +274,20 @@ int tcp_set_tcp_header(uchar *pkt, int dport, int sport, int payload_len, &net_server_ip, &net_ip, tcp_seq_num, tcp_ack_num); payload_len = 0; pkt_hdr_len = IP_TCP_HDR_SIZE; - current_tcp_state = TCP_FIN_WAIT_1; + tcp->state = TCP_FIN_WAIT_1; break; case TCP_RST | TCP_ACK: case TCP_RST: debug_cond(DEBUG_DEV_PKT, "TCP Hdr:RST (%pI4, %pI4, s=%u, a=%u)\n", &net_server_ip, &net_ip, tcp_seq_num, tcp_ack_num); - current_tcp_state = TCP_CLOSED; + tcp->state = TCP_CLOSED; break; /* Notify connection closing */ case (TCP_FIN | TCP_ACK): case (TCP_FIN | TCP_ACK | TCP_PUSH): - if (current_tcp_state == TCP_CLOSE_WAIT) - current_tcp_state = TCP_CLOSING; + if (tcp->state == TCP_CLOSE_WAIT) + tcp->state = TCP_CLOSING;
debug_cond(DEBUG_DEV_PKT, "TCP Hdr:FIN ACK PSH(%pI4, %pI4, s=%u, a=%u, A=%x)\n", @@ -298,7 +295,7 @@ int tcp_set_tcp_header(uchar *pkt, int dport, int sport, int payload_len, tcp_seq_num, tcp_ack_num, action); fallthrough; default: - pkt_hdr_len = IP_HDR_SIZE + net_set_ack_options(b); + pkt_hdr_len = IP_HDR_SIZE + net_set_ack_options(tcp, b); b->ip.hdr.tcp_flags = action | TCP_PUSH | TCP_ACK; debug_cond(DEBUG_DEV_PKT, "TCP Hdr:dft (%pI4, %pI4, s=%u, a=%u, A=%x)\n", @@ -309,9 +306,9 @@ int tcp_set_tcp_header(uchar *pkt, int dport, int sport, int payload_len, pkt_len = pkt_hdr_len + payload_len; tcp_len = pkt_len - IP_HDR_SIZE;
- tcp_ack_edge = tcp_ack_num; + tcp->ack_edge = tcp_ack_num; /* TCP Header */ - b->ip.hdr.tcp_ack = htonl(tcp_ack_edge); + b->ip.hdr.tcp_ack = htonl(tcp->ack_edge); b->ip.hdr.tcp_src = htons(sport); b->ip.hdr.tcp_dst = htons(dport); b->ip.hdr.tcp_seq = htonl(tcp_seq_num); @@ -345,78 +342,79 @@ int tcp_set_tcp_header(uchar *pkt, int dport, int sport, int payload_len, return pkt_hdr_len; }
-static void tcp_update_ack_edge(void) +static void tcp_update_ack_edge(struct tcp_stream *tcp) { - if (tcp_seq_cmp(tcp_ack_edge, tcp_lost.hill[0].l) >= 0) { - tcp_ack_edge = tcp_lost.hill[0].r; + if (tcp_seq_cmp(tcp->ack_edge, tcp->lost.hill[0].l) >= 0) { + tcp->ack_edge = tcp->lost.hill[0].r;
- memmove(&tcp_lost.hill[0], &tcp_lost.hill[1], + memmove(&tcp->lost.hill[0], &tcp->lost.hill[1], (TCP_SACK_HILLS - 1) * sizeof(struct sack_edges));
- tcp_lost.len -= TCP_OPT_LEN_8; - tcp_lost.hill[TCP_SACK_HILLS - 1].l = TCP_O_NOP; - tcp_lost.hill[TCP_SACK_HILLS - 1].r = TCP_O_NOP; + tcp->lost.len -= TCP_OPT_LEN_8; + tcp->lost.hill[TCP_SACK_HILLS - 1].l = TCP_O_NOP; + tcp->lost.hill[TCP_SACK_HILLS - 1].r = TCP_O_NOP; } }
/** * tcp_hole() - Selective Acknowledgment (Essential for fast stream transfer) + * @tcp: tcp stream * @tcp_seq_num: TCP sequence start number * @len: the length of sequence numbers */ -void tcp_hole(u32 tcp_seq_num, u32 len) +void tcp_hole(struct tcp_stream *tcp, u32 tcp_seq_num, u32 len) { int i, j, cnt, cnt_move;
- cnt = (tcp_lost.len - TCP_OPT_LEN_2) / TCP_OPT_LEN_8; + cnt = (tcp->lost.len - TCP_OPT_LEN_2) / TCP_OPT_LEN_8; for (i = 0; i < cnt; i++) { - if (tcp_seq_cmp(tcp_lost.hill[i].r, tcp_seq_num) < 0) + if (tcp_seq_cmp(tcp->lost.hill[i].r, tcp_seq_num) < 0) continue; - if (tcp_seq_cmp(tcp_lost.hill[i].l, tcp_seq_num + len) > 0) + if (tcp_seq_cmp(tcp->lost.hill[i].l, tcp_seq_num + len) > 0) break;
- if (tcp_seq_cmp(tcp_lost.hill[i].l, tcp_seq_num) > 0) - tcp_lost.hill[i].l = tcp_seq_num; - if (tcp_seq_cmp(tcp_lost.hill[i].l, tcp_seq_num) < 0) { - len += tcp_seq_num - tcp_lost.hill[i].l; - tcp_seq_num = tcp_lost.hill[i].l; + if (tcp_seq_cmp(tcp->lost.hill[i].l, tcp_seq_num) > 0) + tcp->lost.hill[i].l = tcp_seq_num; + if (tcp_seq_cmp(tcp->lost.hill[i].l, tcp_seq_num) < 0) { + len += tcp_seq_num - tcp->lost.hill[i].l; + tcp_seq_num = tcp->lost.hill[i].l; } - if (tcp_seq_cmp(tcp_lost.hill[i].r, tcp_seq_num + len) >= 0) { - tcp_update_ack_edge(); + if (tcp_seq_cmp(tcp->lost.hill[i].r, tcp_seq_num + len) >= 0) { + tcp_update_ack_edge(tcp); return; }
/* check overlapping with next hills */ cnt_move = 0; - tcp_lost.hill[i].r = tcp_seq_num + len; + tcp->lost.hill[i].r = tcp_seq_num + len; for (j = i + 1; j < cnt; j++) { - if (tcp_seq_cmp(tcp_lost.hill[j].l, tcp_lost.hill[i].r) > 0) + if (tcp_seq_cmp(tcp->lost.hill[j].l, tcp->lost.hill[i].r) > 0) break;
- tcp_lost.hill[i].r = tcp_lost.hill[j].r; + tcp->lost.hill[i].r = tcp->lost.hill[j].r; cnt_move++; }
if (cnt_move > 0) { if (cnt > i + cnt_move + 1) - memmove(&tcp_lost.hill[i + 1], - &tcp_lost.hill[i + cnt_move + 1], + memmove(&tcp->lost.hill[i + 1], + &tcp->lost.hill[i + cnt_move + 1], cnt_move * sizeof(struct sack_edges));
cnt -= cnt_move; - tcp_lost.len = TCP_OPT_LEN_2 + cnt * TCP_OPT_LEN_8; + tcp->lost.len = TCP_OPT_LEN_2 + cnt * TCP_OPT_LEN_8; for (j = cnt; j < TCP_SACK_HILLS; j++) { - tcp_lost.hill[j].l = TCP_O_NOP; - tcp_lost.hill[j].r = TCP_O_NOP; + tcp->lost.hill[j].l = TCP_O_NOP; + tcp->lost.hill[j].r = TCP_O_NOP; } }
- tcp_update_ack_edge(); + tcp_update_ack_edge(tcp); return; }
if (i == TCP_SACK_HILLS) { - tcp_update_ack_edge(); + tcp_update_ack_edge(tcp); return; }
@@ -429,23 +427,24 @@ void tcp_hole(u32 tcp_seq_num, u32 len) }
if (cnt_move > 0) - memmove(&tcp_lost.hill[i + 1], - &tcp_lost.hill[i], + memmove(&tcp->lost.hill[i + 1], + &tcp->lost.hill[i], cnt_move * sizeof(struct sack_edges));
- tcp_lost.hill[i].l = tcp_seq_num; - tcp_lost.hill[i].r = tcp_seq_num + len; - tcp_lost.len = TCP_OPT_LEN_2 + cnt * TCP_OPT_LEN_8; + tcp->lost.hill[i].l = tcp_seq_num; + tcp->lost.hill[i].r = tcp_seq_num + len; + tcp->lost.len = TCP_OPT_LEN_2 + cnt * TCP_OPT_LEN_8;
- tcp_update_ack_edge(); + tcp_update_ack_edge(tcp); };
/** * tcp_parse_options() - parsing TCP options + * @tcp: tcp stream * @o: pointer to the option field. * @o_len: length of the option field. */ -void tcp_parse_options(uchar *o, int o_len) +void tcp_parse_options(struct tcp_stream *tcp, uchar *o, int o_len) { struct tcp_t_opt *tsopt; uchar *p = o; @@ -468,7 +467,7 @@ void tcp_parse_options(uchar *o, int o_len) break; case TCP_O_TS: tsopt = (struct tcp_t_opt *)p; - rmt_timestamp = tsopt->t_snd; + tcp->rmt_timestamp = tsopt->t_snd; break; }
@@ -480,7 +479,8 @@ void tcp_parse_options(uchar *o, int o_len) } }
-static u8 tcp_state_machine(u8 tcp_flags, u32 tcp_seq_num, int payload_len) +static u8 tcp_state_machine(struct tcp_stream *tcp, u8 tcp_flags, + u32 tcp_seq_num, int payload_len) { u8 tcp_fin = tcp_flags & TCP_FIN; u8 tcp_syn = tcp_flags & TCP_SYN; @@ -501,21 +501,21 @@ static u8 tcp_state_machine(u8 tcp_flags, u32 tcp_seq_num, int payload_len) debug_cond(DEBUG_INT_STATE, "TCP STATE ENTRY %x\n", action); if (tcp_rst) { action = TCP_DATA; - current_tcp_state = TCP_CLOSED; + tcp->state = TCP_CLOSED; net_set_state(NETLOOP_FAIL); debug_cond(DEBUG_INT_STATE, "TCP Reset %x\n", tcp_flags); return TCP_RST; }
- switch (current_tcp_state) { + switch (tcp->state) { case TCP_CLOSED: debug_cond(DEBUG_INT_STATE, "TCP CLOSED %x\n", tcp_flags); if (tcp_syn) { action = TCP_SYN | TCP_ACK; - tcp_seq_init = tcp_seq_num; - tcp_ack_edge = tcp_seq_num + 1; - tcp_lost.len = TCP_OPT_LEN_2; - current_tcp_state = TCP_SYN_RECEIVED; + tcp->seq_init = tcp_seq_num; + tcp->ack_edge = tcp_seq_num + 1; + tcp->lost.len = TCP_OPT_LEN_2; + tcp->state = TCP_SYN_RECEIVED; } else if (tcp_ack || tcp_fin) { action = TCP_DATA; } @@ -526,12 +526,12 @@ static u8 tcp_state_machine(u8 tcp_flags, u32 tcp_seq_num, int payload_len) tcp_flags, tcp_seq_num); if (tcp_fin) { action = action | TCP_PUSH; - current_tcp_state = TCP_CLOSE_WAIT; + tcp->state = TCP_CLOSE_WAIT; } else if (tcp_ack || (tcp_syn && tcp_ack)) { action |= TCP_ACK; - tcp_seq_init = tcp_seq_num; - tcp_ack_edge = tcp_seq_num + 1; - current_tcp_state = TCP_ESTABLISHED; + tcp->seq_init = tcp_seq_num; + tcp->ack_edge = tcp_seq_num + 1; + tcp->state = TCP_ESTABLISHED;
if (tcp_syn && tcp_ack) action |= TCP_PUSH; @@ -542,15 +542,15 @@ static u8 tcp_state_machine(u8 tcp_flags, u32 tcp_seq_num, int payload_len) case TCP_ESTABLISHED: debug_cond(DEBUG_INT_STATE, "TCP_ESTABLISHED %x\n", tcp_flags); if (payload_len > 0) { - tcp_hole(tcp_seq_num, payload_len); + tcp_hole(tcp, tcp_seq_num, payload_len); tcp_fin = TCP_DATA; /* cause standalone FIN */ }
if ((tcp_fin) && (!IS_ENABLED(CONFIG_PROT_TCP_SACK) || - tcp_lost.len <= TCP_OPT_LEN_2)) { + tcp->lost.len <= TCP_OPT_LEN_2)) { action = action | TCP_FIN | TCP_PUSH | TCP_ACK; - current_tcp_state = TCP_CLOSE_WAIT; + tcp->state = TCP_CLOSE_WAIT; } else if (tcp_ack) { action = TCP_DATA; } @@ -568,7 +568,7 @@ static u8 tcp_state_machine(u8 tcp_flags, u32 tcp_seq_num, int payload_len) debug_cond(DEBUG_INT_STATE, "TCP_FIN_WAIT_2 (%x)\n", tcp_flags); if (tcp_ack) { action = TCP_PUSH | TCP_ACK; - current_tcp_state = TCP_CLOSED; + tcp->state = TCP_CLOSED; puts("\n"); } else if (tcp_syn) { action = TCP_DATA; @@ -579,20 +579,20 @@ static u8 tcp_state_machine(u8 tcp_flags, u32 tcp_seq_num, int payload_len) case TCP_FIN_WAIT_1: debug_cond(DEBUG_INT_STATE, "TCP_FIN_WAIT_1 (%x)\n", tcp_flags); if (tcp_fin) { - tcp_ack_edge++; + tcp->ack_edge++; action = TCP_ACK | TCP_FIN; - current_tcp_state = TCP_FIN_WAIT_2; + tcp->state = TCP_FIN_WAIT_2; } if (tcp_syn) action = TCP_RST; if (tcp_ack) - current_tcp_state = TCP_CLOSED; + tcp->state = TCP_CLOSED; break; case TCP_CLOSING: debug_cond(DEBUG_INT_STATE, "TCP_CLOSING (%x)\n", tcp_flags); if (tcp_ack) { action = TCP_PUSH; - current_tcp_state = TCP_CLOSED; + tcp->state = TCP_CLOSED; puts("\n"); } else if (tcp_syn) { action = TCP_RST; @@ -616,6 +616,7 @@ void rxhand_tcp_f(union tcp_build_pkt *b, unsigned int pkt_len) u8 tcp_action = TCP_DATA; u32 tcp_seq_num, tcp_ack_num; int tcp_hdr_len, payload_len; + struct tcp_stream *tcp;
/* Verify IP header */ debug_cond(DEBUG_DEV_PKT, @@ -644,11 +645,15 @@ void rxhand_tcp_f(union tcp_build_pkt *b, unsigned int pkt_len) return; }
+ tcp = tcp_stream_get(); + if (tcp == NULL) + return; + tcp_hdr_len = GET_TCP_HDR_LEN_IN_BYTES(b->ip.hdr.tcp_hlen); payload_len = tcp_len - tcp_hdr_len;
if (tcp_hdr_len > TCP_HDR_SIZE) - tcp_parse_options((uchar *)b + IP_TCP_HDR_SIZE, + tcp_parse_options(tcp, (uchar *)b + IP_TCP_HDR_SIZE, tcp_hdr_len - TCP_HDR_SIZE); /* * Incoming sequence and ack numbers are server's view of the numbers. @@ -658,7 +663,7 @@ void rxhand_tcp_f(union tcp_build_pkt *b, unsigned int pkt_len) tcp_ack_num = ntohl(b->ip.hdr.tcp_ack);
/* Packets are not ordered. Send to app as received. */ - tcp_action = tcp_state_machine(b->ip.hdr.tcp_flags, + tcp_action = tcp_state_machine(tcp, b->ip.hdr.tcp_flags, tcp_seq_num, payload_len);
tcp_activity_count++; @@ -679,7 +684,7 @@ void rxhand_tcp_f(union tcp_build_pkt *b, unsigned int pkt_len) } else if (tcp_action != TCP_DATA) { debug_cond(DEBUG_DEV_PKT, "TCP Action (action=%x,Seq=%u,Ack=%u,Pay=%d)\n", - tcp_action, tcp_ack_num, tcp_ack_edge, payload_len); + tcp_action, tcp_ack_num, tcp->ack_edge, payload_len);
/* * Warning: Incoming Ack & Seq sequence numbers are transposed @@ -688,6 +693,6 @@ void rxhand_tcp_f(union tcp_build_pkt *b, unsigned int pkt_len) net_send_tcp_packet(0, ntohs(b->ip.hdr.tcp_src), ntohs(b->ip.hdr.tcp_dst), (tcp_action & (~TCP_PUSH)), - tcp_ack_num, tcp_ack_edge); + tcp_ack_num, tcp->ack_edge); } } diff --git a/net/wget.c b/net/wget.c index abab371e58e..1c0f97a6cc0 100644 --- a/net/wget.c +++ b/net/wget.c @@ -357,7 +357,8 @@ static void wget_handler(uchar *pkt, u16 dport, u32 tcp_seq_num, u32 tcp_ack_num, u8 action, unsigned int len) { - enum tcp_state wget_tcp_state = tcp_get_tcp_state(); + struct tcp_stream *tcp = tcp_stream_get(); + enum tcp_state wget_tcp_state = tcp_get_tcp_state(tcp);
net_set_timeout_handler(wget_timeout, wget_timeout_handler); packets++;