From: Tatyana Nikolova tatyana.e.nikolova@intel.com
[ Upstream commit e4522c097ec10f23ea0933e9e69d4fa9d8ae9441 ]
Add ipv4 check to irdma_find_listener(). Otherwise the function incorrectly finds and returns a listener with a different addr family for the zero IP addr, if a listener with a zero IP addr and the same port as the one searched for has already been created.
Fixes: 146b9756f14c ("RDMA/irdma: Add connection manager") Signed-off-by: Tatyana Nikolova tatyana.e.nikolova@intel.com Signed-off-by: Shiraz Saleem shiraz.saleem@intel.com Link: https://lore.kernel.org/r/20230315145231.931-5-shiraz.saleem@intel.com Signed-off-by: Leon Romanovsky leon@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/infiniband/hw/irdma/cm.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/infiniband/hw/irdma/cm.c b/drivers/infiniband/hw/irdma/cm.c index a8ec3d8f6e465..64d4bb0e9a12f 100644 --- a/drivers/infiniband/hw/irdma/cm.c +++ b/drivers/infiniband/hw/irdma/cm.c @@ -1458,13 +1458,15 @@ static int irdma_send_fin(struct irdma_cm_node *cm_node) * irdma_find_listener - find a cm node listening on this addr-port pair * @cm_core: cm's core * @dst_addr: listener ip addr + * @ipv4: flag indicating IPv4 when true * @dst_port: listener tcp port num * @vlan_id: virtual LAN ID * @listener_state: state to match with listen node's */ static struct irdma_cm_listener * -irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, u16 dst_port, - u16 vlan_id, enum irdma_cm_listener_state listener_state) +irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, bool ipv4, + u16 dst_port, u16 vlan_id, + enum irdma_cm_listener_state listener_state) { struct irdma_cm_listener *listen_node; static const u32 ip_zero[4] = { 0, 0, 0, 0 }; @@ -1477,7 +1479,7 @@ irdma_find_listener(struct irdma_cm_core *cm_core, u32 *dst_addr, u16 dst_port, list_for_each_entry (listen_node, &cm_core->listen_list, list) { memcpy(listen_addr, listen_node->loc_addr, sizeof(listen_addr)); listen_port = listen_node->loc_port; - if (listen_port != dst_port || + if (listen_node->ipv4 != ipv4 || listen_port != dst_port || !(listener_state & listen_node->listener_state)) continue; /* compare node pair, return node handle if a match */ @@ -2899,9 +2901,10 @@ irdma_make_listen_node(struct irdma_cm_core *cm_core, unsigned long flags;
/* cannot have multiple matching listeners */ - listener = irdma_find_listener(cm_core, cm_info->loc_addr, - cm_info->loc_port, cm_info->vlan_id, - IRDMA_CM_LISTENER_EITHER_STATE); + listener = + irdma_find_listener(cm_core, cm_info->loc_addr, cm_info->ipv4, + cm_info->loc_port, cm_info->vlan_id, + IRDMA_CM_LISTENER_EITHER_STATE); if (listener && listener->listener_state == IRDMA_CM_LISTENER_ACTIVE_STATE) { refcount_dec(&listener->refcnt); @@ -3150,6 +3153,7 @@ void irdma_receive_ilq(struct irdma_sc_vsi *vsi, struct irdma_puda_buf *rbuf)
listener = irdma_find_listener(cm_core, cm_info.loc_addr, + cm_info.ipv4, cm_info.loc_port, cm_info.vlan_id, IRDMA_CM_LISTENER_ACTIVE_STATE);