From fc37ddce937bb245cc3490fbaa98e64f31bb6751 Mon Sep 17 00:00:00 2001 From: Chad Dupuis Date: Tue, 26 Mar 2019 00:38:50 -0700 Subject: [PATCH] scsi: qedf: Check both the FCF and fabric ID before servicing clear virtual link - Check proper values before servicing CVL. Signed-off-by: Chad Dupuis Signed-off-by: Saurav Kashyap Signed-off-by: Martin K. Petersen --- drivers/scsi/qedf/qedf_fip.c | 66 ++++++++++++++++++++++++++---------- 1 file changed, 48 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/qedf/qedf_fip.c b/drivers/scsi/qedf/qedf_fip.c index 53c5eca55061..766da74fa546 100644 --- a/drivers/scsi/qedf/qedf_fip.c +++ b/drivers/scsi/qedf/qedf_fip.c @@ -151,6 +151,8 @@ void qedf_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) qed_ops->ll2->start_xmit(qedf->cdev, skb, 0); } +static u8 fcoe_all_enode[ETH_ALEN] = FIP_ALL_ENODE_MACS; + /* Process incoming FIP frames. */ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) { @@ -163,20 +165,37 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) size_t rlen, dlen; u16 op; u8 sub; - bool do_reset = false; + bool fcf_valid = false; + /* Default is to handle CVL regardless of fabric id descriptor */ + bool fabric_id_valid = true; + bool fc_wwpn_valid = false; + u64 switch_name; + u16 vlan = 0; eth_hdr = (struct ethhdr *)skb_mac_header(skb); fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); op = ntohs(fiph->fip_op); sub = fiph->fip_subcode; - QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "FIP frame received: " - "skb=%p fiph=%p source=%pM op=%x sub=%x", skb, fiph, - eth_hdr->h_source, op, sub); + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, + "FIP frame received: skb=%p fiph=%p source=%pM destn=%pM op=%x sub=%x vlan=%04x", + skb, fiph, eth_hdr->h_source, eth_hdr->h_dest, op, + sub, vlan); if (qedf_dump_frames) print_hex_dump(KERN_WARNING, "fip ", DUMP_PREFIX_OFFSET, 16, 1, skb->data, skb->len, false); + if (!ether_addr_equal(eth_hdr->h_dest, qedf->mac) && + !ether_addr_equal(eth_hdr->h_dest, fcoe_all_enode) && + !ether_addr_equal(eth_hdr->h_dest, qedf->data_src_addr)) { + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, + "Dropping FIP type 0x%x pkt due to destination MAC mismatch dest_mac=%pM ctlr.dest_addr=%pM data_src_addr=%pM.\n", + op, eth_hdr->h_dest, qedf->mac, + qedf->data_src_addr); + kfree_skb(skb); + return; + } + /* Handle FIP VLAN resp in the driver */ if (op == FIP_OP_VLAN && sub == FIP_SC_VL_NOTE) { qedf_fcoe_process_vlan_resp(qedf, skb); @@ -205,25 +224,36 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) switch (desc->fip_dtype) { case FIP_DT_MAC: mp = (struct fip_mac_desc *)desc; - QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, - "fd_mac=%pM\n", mp->fd_mac); + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "Switch fd_mac=%pM.\n", mp->fd_mac); if (ether_addr_equal(mp->fd_mac, qedf->ctlr.sel_fcf->fcf_mac)) - do_reset = true; + fcf_valid = true; break; case FIP_DT_NAME: wp = (struct fip_wwn_desc *)desc; - QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, - "fc_wwpn=%016llx.\n", - get_unaligned_be64(&wp->fd_wwn)); + switch_name = get_unaligned_be64(&wp->fd_wwn); + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "Switch fd_wwn=%016llx fcf_switch_name=%016llx.\n", + switch_name, + qedf->ctlr.sel_fcf->switch_name); + if (switch_name == + qedf->ctlr.sel_fcf->switch_name) + fc_wwpn_valid = true; break; case FIP_DT_VN_ID: vp = (struct fip_vn_desc *)desc; - QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, - "fd_fc_id=%x.\n", ntoh24(vp->fd_fc_id)); - if (ntoh24(vp->fd_fc_id) == + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "vx_port fd_fc_id=%x fd_mac=%pM.\n", + ntoh24(vp->fd_fc_id), vp->fd_mac); + /* Check vx_port fabric ID */ + if (ntoh24(vp->fd_fc_id) != qedf->lport->port_id) - do_reset = true; + fabric_id_valid = false; + /* Check vx_port MAC */ + if (!ether_addr_equal(vp->fd_mac, + qedf->data_src_addr)) + fabric_id_valid = false; break; default: /* Ignore anything else */ @@ -233,11 +263,11 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) rlen -= dlen; } - QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, - "do_reset=%d.\n", do_reset); - if (do_reset) { + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "fcf_valid=%d fabric_id_valid=%d fc_wwpn_valid=%d.\n", + fcf_valid, fabric_id_valid, fc_wwpn_valid); + if (fcf_valid && fabric_id_valid && fc_wwpn_valid) qedf_ctx_soft_reset(qedf->lport); - } kfree_skb(skb); } else { /* Everything else is handled by libfcoe */ -- 2.30.2