qed: Fix iWARP syn packet mac address validation.

[ Upstream commit 8be3dadf04050c2907760ec1955ca1c8fbc25585 ]

The ll2 forwards all syn packets to the driver without validating the mac
address. Add validation check in the driver's iWARP listener flow and drop
the packet if it isn't intended for the device.

Signed-off-by: Ariel Elior <ariel.elior@marvell.com>
Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
index eb666877d1aa97398e5c869cabdb59f88a5ae662..bb09f5a9846f6db3c9eb63fac22b7ba2db58d341 100644 (file)
--- a/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_iwarp.c
@@ -1651,6 +1651,15 @@ qed_iwarp_parse_rx_pkt(struct qed_hwfn *p_hwfn,
 
        eth_hlen = ETH_HLEN + (vlan_valid ? sizeof(u32) : 0);
 
+       if (!ether_addr_equal(ethh->h_dest,
+                             p_hwfn->p_rdma_info->iwarp.mac_addr)) {
+               DP_VERBOSE(p_hwfn,
+                          QED_MSG_RDMA,
+                          "Got unexpected mac %pM instead of %pM\n",
+                          ethh->h_dest, p_hwfn->p_rdma_info->iwarp.mac_addr);
+               return -EINVAL;
+       }
+
        ether_addr_copy(remote_mac_addr, ethh->h_source);
        ether_addr_copy(local_mac_addr, ethh->h_dest);