s390: qeth driver connection hang

      Frank Pavlic <fpavlic@de.ibm.com>

Connection hangs when using EDDP mode because sk_protocol is NULL
when skb has been copied via skb_copy. This results in dropping
packets.
Also keep MAC address after recovery of Virtual NICs so that
traffic can flow again and duplicate statements in
qeth_dev_set_route_store removed.

Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Frank Pavlic <fpavlic@de.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/s390/net/qeth_eddp.c b/drivers/s390/net/qeth_eddp.c
index dd7034f..4640f32 100644 (file)
--- a/drivers/s390/net/qeth_eddp.c
+++ b/drivers/s390/net/qeth_eddp.c
@@ -620,10 +620,10 @@ qeth_eddp_create_context_tcp(struct qeth_card *card, struct sk_buff *skb,
 
 struct qeth_eddp_context *
 qeth_eddp_create_context(struct qeth_card *card, struct sk_buff *skb,
-                        struct qeth_hdr *qhdr)
+                        struct qeth_hdr *qhdr, unsigned char sk_protocol)
 {
        QETH_DBF_TEXT(trace, 5, "creddpc");
-       switch (skb->sk->sk_protocol){
+       switch (sk_protocol) {
        case IPPROTO_TCP:
                return qeth_eddp_create_context_tcp(card, skb, qhdr);
        default:

diff --git a/drivers/s390/net/qeth_eddp.h b/drivers/s390/net/qeth_eddp.h
index 103768d..52910c9 100644 (file)
--- a/drivers/s390/net/qeth_eddp.h
+++ b/drivers/s390/net/qeth_eddp.h
@@ -34,7 +34,8 @@ struct qeth_eddp_context_reference {
 };
 
 extern struct qeth_eddp_context *
-qeth_eddp_create_context(struct qeth_card *,struct sk_buff *,struct qeth_hdr *);
+qeth_eddp_create_context(struct qeth_card *,struct sk_buff *,
+                        struct qeth_hdr *, unsigned char);
 
 extern void
 qeth_eddp_put_context(struct qeth_eddp_context *);

diff --git a/drivers/s390/net/qeth_main.c b/drivers/s390/net/qeth_main.c
index 6fd8870..0324835 100644 (file)
--- a/drivers/s390/net/qeth_main.c
+++ b/drivers/s390/net/qeth_main.c
@@ -4490,7 +4490,8 @@ qeth_send_packet(struct qeth_card *card, struct sk_buff *skb)
                qeth_fill_header(card, hdr, new_skb, ipv, cast_type);
        }
        if (large_send == QETH_LARGE_SEND_EDDP) {
-               ctx = qeth_eddp_create_context(card, new_skb, hdr);
+               ctx = qeth_eddp_create_context(card, new_skb, hdr,
+                                              skb->sk->sk_protocol);
                if (ctx == NULL) {
                        __qeth_free_new_skb(skb, new_skb);
                        PRINT_WARN("could not create eddp context\n");
@@ -6651,7 +6652,7 @@ qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
        QETH_DBF_TEXT(trace,4,"chgmaccb");
 
        cmd = (struct qeth_ipa_cmd *) data;
-       if (!card->options.layer2 || card->info.guestlan ||
+       if (!card->options.layer2 ||
            !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
                memcpy(card->dev->dev_addr,
                       &cmd->data.setadapterparms.data.change_addr.addr,

diff --git a/drivers/s390/net/qeth_sys.c b/drivers/s390/net/qeth_sys.c
index d518419..65ffc21 100644 (file)
--- a/drivers/s390/net/qeth_sys.c
+++ b/drivers/s390/net/qeth_sys.c
@@ -384,8 +384,6 @@ qeth_dev_route_store(struct qeth_card *card, struct qeth_routing_info *route,
                route->type = PRIMARY_CONNECTOR;
        } else if (!strcmp(tmp, "secondary_connector")) {
                route->type = SECONDARY_CONNECTOR;
-       } else if (!strcmp(tmp, "multicast_router")) {
-               route->type = MULTICAST_ROUTER;
        } else if (!strcmp(tmp, "primary_router")) {
                route->type = PRIMARY_ROUTER;
        } else if (!strcmp(tmp, "secondary_router")) {