summaryrefslogtreecommitdiffstats
path: root/drivers/infiniband/hw/nes/nes_cm.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/infiniband/hw/nes/nes_cm.c')
-rw-r--r--drivers/infiniband/hw/nes/nes_cm.c56
1 files changed, 25 insertions, 31 deletions
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index 4969c386785..2c90b38daef 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -1326,18 +1326,20 @@ static void handle_fin_pkt(struct nes_cm_node *cm_node)
nes_debug(NES_DBG_CM, "Received FIN, cm_node = %p, state = %u. "
"refcnt=%d\n", cm_node, cm_node->state,
atomic_read(&cm_node->ref_count));
- cm_node->tcp_cntxt.rcv_nxt++;
- cleanup_retrans_entry(cm_node);
switch (cm_node->state) {
case NES_CM_STATE_SYN_RCVD:
case NES_CM_STATE_SYN_SENT:
case NES_CM_STATE_ESTABLISHED:
case NES_CM_STATE_MPAREQ_SENT:
case NES_CM_STATE_MPAREJ_RCVD:
+ cm_node->tcp_cntxt.rcv_nxt++;
+ cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_LAST_ACK;
send_fin(cm_node, NULL);
break;
case NES_CM_STATE_FIN_WAIT1:
+ cm_node->tcp_cntxt.rcv_nxt++;
+ cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_CLOSING;
send_ack(cm_node, NULL);
/* Wait for ACK as this is simultanous close..
@@ -1345,11 +1347,15 @@ static void handle_fin_pkt(struct nes_cm_node *cm_node)
* Just rm the node.. Done.. */
break;
case NES_CM_STATE_FIN_WAIT2:
+ cm_node->tcp_cntxt.rcv_nxt++;
+ cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_TIME_WAIT;
send_ack(cm_node, NULL);
schedule_nes_timer(cm_node, NULL, NES_TIMER_TYPE_CLOSE, 1, 0);
break;
case NES_CM_STATE_TIME_WAIT:
+ cm_node->tcp_cntxt.rcv_nxt++;
+ cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_CLOSED;
rem_ref_cm_node(cm_node->cm_core, cm_node);
break;
@@ -1385,7 +1391,6 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
passive_state = atomic_add_return(1, &cm_node->passive_state);
if (passive_state == NES_SEND_RESET_EVENT)
create_event(cm_node, NES_CM_EVENT_RESET);
- cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_CLOSED;
dev_kfree_skb_any(skb);
break;
@@ -1399,17 +1404,16 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
active_open_err(cm_node, skb, reset);
break;
case NES_CM_STATE_CLOSED:
- cleanup_retrans_entry(cm_node);
drop_packet(skb);
break;
+ case NES_CM_STATE_LAST_ACK:
+ cm_node->cm_id->rem_ref(cm_node->cm_id);
case NES_CM_STATE_TIME_WAIT:
- cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_CLOSED;
rem_ref_cm_node(cm_node->cm_core, cm_node);
drop_packet(skb);
break;
case NES_CM_STATE_FIN_WAIT1:
- cleanup_retrans_entry(cm_node);
nes_debug(NES_DBG_CM, "Bad state %s[%u]\n", __func__, __LINE__);
default:
drop_packet(skb);
@@ -1456,6 +1460,7 @@ static void handle_rcv_mpa(struct nes_cm_node *cm_node, struct sk_buff *skb)
NES_PASSIVE_STATE_INDICATED);
break;
case NES_CM_STATE_MPAREQ_SENT:
+ cleanup_retrans_entry(cm_node);
if (res_type == NES_MPA_REQUEST_REJECT) {
type = NES_CM_EVENT_MPA_REJECT;
cm_node->state = NES_CM_STATE_MPAREJ_RCVD;
@@ -1653,49 +1658,39 @@ static void handle_synack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
}
}
-static void handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
+static int handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
struct tcphdr *tcph)
{
int datasize = 0;
u32 inc_sequence;
u32 rem_seq_ack;
u32 rem_seq;
- int ret;
+ int ret = 0;
int optionsize;
optionsize = (tcph->doff << 2) - sizeof(struct tcphdr);
if (check_seq(cm_node, tcph, skb))
- return;
+ return -EINVAL;
skb_pull(skb, tcph->doff << 2);
inc_sequence = ntohl(tcph->seq);
rem_seq = ntohl(tcph->seq);
rem_seq_ack = ntohl(tcph->ack_seq);
datasize = skb->len;
- cleanup_retrans_entry(cm_node);
switch (cm_node->state) {
case NES_CM_STATE_SYN_RCVD:
/* Passive OPEN */
+ cleanup_retrans_entry(cm_node);
ret = handle_tcp_options(cm_node, tcph, skb, optionsize, 1);
if (ret)
break;
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
- if (cm_node->tcp_cntxt.rem_ack_num !=
- cm_node->tcp_cntxt.loc_seq_num) {
- nes_debug(NES_DBG_CM, "rem_ack_num != loc_seq_num\n");
- cleanup_retrans_entry(cm_node);
- send_reset(cm_node, skb);
- return;
- }
cm_node->state = NES_CM_STATE_ESTABLISHED;
- cleanup_retrans_entry(cm_node);
if (datasize) {
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
handle_rcv_mpa(cm_node, skb);
- } else { /* rcvd ACK only */
+ } else /* rcvd ACK only */
dev_kfree_skb_any(skb);
- cleanup_retrans_entry(cm_node);
- }
break;
case NES_CM_STATE_ESTABLISHED:
/* Passive OPEN */
@@ -1707,15 +1702,12 @@ static void handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
drop_packet(skb);
break;
case NES_CM_STATE_MPAREQ_SENT:
- cleanup_retrans_entry(cm_node);
cm_node->tcp_cntxt.rem_ack_num = ntohl(tcph->ack_seq);
if (datasize) {
cm_node->tcp_cntxt.rcv_nxt = inc_sequence + datasize;
handle_rcv_mpa(cm_node, skb);
- } else { /* Could be just an ack pkt.. */
- cleanup_retrans_entry(cm_node);
+ } else /* Could be just an ack pkt.. */
dev_kfree_skb_any(skb);
- }
break;
case NES_CM_STATE_LISTENING:
case NES_CM_STATE_CLOSED:
@@ -1723,11 +1715,10 @@ static void handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
send_reset(cm_node, skb);
break;
case NES_CM_STATE_LAST_ACK:
+ case NES_CM_STATE_CLOSING:
cleanup_retrans_entry(cm_node);
cm_node->state = NES_CM_STATE_CLOSED;
cm_node->cm_id->rem_ref(cm_node->cm_id);
- case NES_CM_STATE_CLOSING:
- cleanup_retrans_entry(cm_node);
rem_ref_cm_node(cm_node->cm_core, cm_node);
drop_packet(skb);
break;
@@ -1742,9 +1733,11 @@ static void handle_ack_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
case NES_CM_STATE_MPAREQ_RCVD:
case NES_CM_STATE_UNKNOWN:
default:
+ cleanup_retrans_entry(cm_node);
drop_packet(skb);
break;
}
+ return ret;
}
@@ -1850,6 +1843,7 @@ static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb,
enum nes_tcpip_pkt_type pkt_type = NES_PKT_TYPE_UNKNOWN;
struct tcphdr *tcph = tcp_hdr(skb);
u32 fin_set = 0;
+ int ret = 0;
skb_pull(skb, ip_hdr(skb)->ihl << 2);
nes_debug(NES_DBG_CM, "process_packet: cm_node=%p state =%d syn=%d "
@@ -1875,17 +1869,17 @@ static void process_packet(struct nes_cm_node *cm_node, struct sk_buff *skb,
handle_synack_pkt(cm_node, skb, tcph);
break;
case NES_PKT_TYPE_ACK:
- handle_ack_pkt(cm_node, skb, tcph);
- if (fin_set)
+ ret = handle_ack_pkt(cm_node, skb, tcph);
+ if (fin_set && !ret)
handle_fin_pkt(cm_node);
break;
case NES_PKT_TYPE_RST:
handle_rst_pkt(cm_node, skb, tcph);
break;
default:
- drop_packet(skb);
- if (fin_set)
+ if ((fin_set) && (!check_seq(cm_node, tcph, skb)))
handle_fin_pkt(cm_node);
+ drop_packet(skb);
break;
}
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-25 13:44:01 +0000