From 53c51adbe6f83eba94fd39000f98cf4235a89e4c Mon Sep 17 00:00:00 2001 From: Chad Dupuis Date: Wed, 31 May 2017 06:33:51 -0700 Subject: [PATCH] scsi: qedf: Look at all descriptors when processing a clear virtual link. If there are multiple descriptors for a particular type in a clear virtual link we receive, we will not process it correctly but rather take the last value. This can cause us not to not flap the virtual link as the value from the descriptors that we compare against the our stored FCF or fc_lport values may not match. Change this to do a comparison when processing the each descriptor instead of at the end and then set a bool if we need to do the reset. Signed-off-by: Chad Dupuis Signed-off-by: Martin K. Petersen --- drivers/scsi/qedf/qedf_fip.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-) diff --git a/drivers/scsi/qedf/qedf_fip.c b/drivers/scsi/qedf/qedf_fip.c index 2dfb8179ed0e..64b04f245e15 100644 --- a/drivers/scsi/qedf/qedf_fip.c +++ b/drivers/scsi/qedf/qedf_fip.c @@ -156,10 +156,9 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) struct fip_wwn_desc *wp; struct fip_vn_desc *vp; size_t rlen, dlen; - uint32_t cvl_port_id; - __u8 cvl_mac[ETH_ALEN]; u16 op; u8 sub; + bool do_reset = false; eth_hdr = (struct ethhdr *)skb_mac_header(skb); fiph = (struct fip_header *) ((void *)skb->data + 2 * ETH_ALEN + 2); @@ -190,8 +189,6 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) return; } - cvl_port_id = 0; - memset(cvl_mac, 0, ETH_ALEN); /* * We need to loop through the CVL descriptors to determine * if we want to reset the fcoe link @@ -205,7 +202,9 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) mp = (struct fip_mac_desc *)desc; QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "fd_mac=%pM\n", mp->fd_mac); - ether_addr_copy(cvl_mac, mp->fd_mac); + if (ether_addr_equal(mp->fd_mac, + qedf->ctlr.sel_fcf->fcf_mac)) + do_reset = true; break; case FIP_DT_NAME: wp = (struct fip_wwn_desc *)desc; @@ -217,7 +216,9 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) vp = (struct fip_vn_desc *)desc; QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, "fd_fc_id=%x.\n", ntoh24(vp->fd_fc_id)); - cvl_port_id = ntoh24(vp->fd_fc_id); + if (ntoh24(vp->fd_fc_id) == + qedf->lport->port_id) + do_reset = true; break; default: /* Ignore anything else */ @@ -228,11 +229,8 @@ void qedf_fip_recv(struct qedf_ctx *qedf, struct sk_buff *skb) } QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_LL2, - "cvl_port_id=%06x cvl_mac=%pM.\n", cvl_port_id, - cvl_mac); - if (cvl_port_id == qedf->lport->port_id && - ether_addr_equal(cvl_mac, - qedf->ctlr.sel_fcf->fcf_mac)) { + "do_reset=%d.\n", do_reset); + if (do_reset) { fcoe_ctlr_link_down(&qedf->ctlr); qedf_wait_for_upload(qedf); fcoe_ctlr_link_up(&qedf->ctlr); -- 2.20.1