From c8ba5b91a04e3e2643e48501c114108802f21cda Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 27 Mar 2019 11:38:38 -0700 Subject: nfp: validate the return code from dev_queue_xmit() dev_queue_xmit() may return error codes as well as netdev_tx_t, and it always consumes the skb. Make sure we always return a correct netdev_tx_t value. Fixes: eadfa4c3be99 ("nfp: add stats and xmit helpers for representors") Signed-off-by: Jakub Kicinski Reviewed-by: John Hurley Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/nfp_net_repr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet/netronome') diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c index d2c803bb4e56..7b46fce2e81e 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c @@ -195,7 +195,7 @@ static netdev_tx_t nfp_repr_xmit(struct sk_buff *skb, struct net_device *netdev) ret = dev_queue_xmit(skb); nfp_repr_inc_tx_stats(netdev, len, ret); - return ret; + return NETDEV_TX_OK; } static int nfp_repr_stop(struct net_device *netdev) -- cgit v1.2.3-59-g8ed1b From c3e1f7fff69c78169c8ac40cc74ac4307f74e36d Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 27 Mar 2019 11:38:39 -0700 Subject: nfp: disable netpoll on representors NFP reprs are software device on top of the PF's vNIC. The comment above __dev_queue_xmit() sayeth: When calling this method, interrupts MUST be enabled. This is because the BH enable code must have IRQs enabled so that it will not deadlock. For netconsole we can't guarantee IRQ state, let's just disable netpoll on representors to be on the safe side. When the initial implementation of NFP reprs was added by the commit 5de73ee46704 ("nfp: general representor implementation") .ndo_poll_controller was required for netpoll to be enabled. Fixes: ac3d9dd034e5 ("netpoll: make ndo_poll_controller() optional") Signed-off-by: Jakub Kicinski Reviewed-by: John Hurley Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/nfp_net_repr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/net/ethernet/netronome') diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c index 7b46fce2e81e..94d228c04496 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c @@ -383,7 +383,7 @@ int nfp_repr_init(struct nfp_app *app, struct net_device *netdev, netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6); netdev->gso_max_segs = NFP_NET_LSO_MAX_SEGS; - netdev->priv_flags |= IFF_NO_QUEUE; + netdev->priv_flags |= IFF_NO_QUEUE | IFF_DISABLE_NETPOLL; netdev->features |= NETIF_F_LLTX; if (nfp_app_has_tc(app)) { -- cgit v1.2.3-59-g8ed1b From f7ee799a51ddbcc205ef615fe424fb5084e9e0aa Mon Sep 17 00:00:00 2001 From: Pieter Jansen van Vuuren Date: Fri, 29 Mar 2019 19:04:43 -0700 Subject: nfp: flower: replace CFI with vlan present Replace vlan CFI bit with a vlan present bit that indicates the presence of a vlan tag. Previously the driver incorrectly assumed that an vlan id of 0 is not matchable, therefore we indicate vlan presence with a vlan present bit. Fixes: 5571e8c9f241 ("nfp: extend flower matching capabilities") Signed-off-by: Pieter Jansen van Vuuren Signed-off-by: Louis Peens Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/flower/cmsg.h | 2 +- drivers/net/ethernet/netronome/nfp/flower/match.c | 27 +++++++++++------------ 2 files changed, 14 insertions(+), 15 deletions(-) (limited to 'drivers/net/ethernet/netronome') diff --git a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h index 4fcaf11ed56e..08ed777b86d2 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h +++ b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h @@ -26,7 +26,7 @@ #define NFP_FLOWER_LAYER2_GENEVE_OP BIT(6) #define NFP_FLOWER_MASK_VLAN_PRIO GENMASK(15, 13) -#define NFP_FLOWER_MASK_VLAN_CFI BIT(12) +#define NFP_FLOWER_MASK_VLAN_PRESENT BIT(12) #define NFP_FLOWER_MASK_VLAN_VID GENMASK(11, 0) #define NFP_FLOWER_MASK_MPLS_LB GENMASK(31, 12) diff --git a/drivers/net/ethernet/netronome/nfp/flower/match.c b/drivers/net/ethernet/netronome/nfp/flower/match.c index e03c8ef2c28c..9b8b843d0340 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/match.c +++ b/drivers/net/ethernet/netronome/nfp/flower/match.c @@ -30,20 +30,19 @@ nfp_flower_compile_meta_tci(struct nfp_flower_meta_tci *ext, flow_rule_match_vlan(rule, &match); /* Populate the tci field. */ - if (match.key->vlan_id || match.key->vlan_priority) { - tmp_tci = FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO, - match.key->vlan_priority) | - FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID, - match.key->vlan_id) | - NFP_FLOWER_MASK_VLAN_CFI; - ext->tci = cpu_to_be16(tmp_tci); - tmp_tci = FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO, - match.mask->vlan_priority) | - FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID, - match.mask->vlan_id) | - NFP_FLOWER_MASK_VLAN_CFI; - msk->tci = cpu_to_be16(tmp_tci); - } + tmp_tci = NFP_FLOWER_MASK_VLAN_PRESENT; + tmp_tci |= FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO, + match.key->vlan_priority) | + FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID, + match.key->vlan_id); + ext->tci = cpu_to_be16(tmp_tci); + + tmp_tci = NFP_FLOWER_MASK_VLAN_PRESENT; + tmp_tci |= FIELD_PREP(NFP_FLOWER_MASK_VLAN_PRIO, + match.mask->vlan_priority) | + FIELD_PREP(NFP_FLOWER_MASK_VLAN_VID, + match.mask->vlan_id); + msk->tci = cpu_to_be16(tmp_tci); } } -- cgit v1.2.3-59-g8ed1b From 42cd5484a22f1a1b947e21e2af65fa7dab09d017 Mon Sep 17 00:00:00 2001 From: Pieter Jansen van Vuuren Date: Fri, 29 Mar 2019 19:04:44 -0700 Subject: nfp: flower: remove vlan CFI bit from push vlan action We no longer set CFI when pushing vlan tags, therefore we remove the CFI bit from push vlan. Fixes: 1a1e586f54bf ("nfp: add basic action capabilities to flower offloads") Signed-off-by: Pieter Jansen van Vuuren Signed-off-by: Louis Peens Reviewed-by: Jakub Kicinski Signed-off-by: David S. Miller --- drivers/net/ethernet/netronome/nfp/flower/action.c | 3 +-- drivers/net/ethernet/netronome/nfp/flower/cmsg.h | 1 - 2 files changed, 1 insertion(+), 3 deletions(-) (limited to 'drivers/net/ethernet/netronome') diff --git a/drivers/net/ethernet/netronome/nfp/flower/action.c b/drivers/net/ethernet/netronome/nfp/flower/action.c index eeda4ed98333..e336f6ee94f5 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/action.c +++ b/drivers/net/ethernet/netronome/nfp/flower/action.c @@ -48,8 +48,7 @@ nfp_fl_push_vlan(struct nfp_fl_push_vlan *push_vlan, tmp_push_vlan_tci = FIELD_PREP(NFP_FL_PUSH_VLAN_PRIO, act->vlan.prio) | - FIELD_PREP(NFP_FL_PUSH_VLAN_VID, act->vlan.vid) | - NFP_FL_PUSH_VLAN_CFI; + FIELD_PREP(NFP_FL_PUSH_VLAN_VID, act->vlan.vid); push_vlan->vlan_tci = cpu_to_be16(tmp_push_vlan_tci); } diff --git a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h index 08ed777b86d2..0ed51e79db00 100644 --- a/drivers/net/ethernet/netronome/nfp/flower/cmsg.h +++ b/drivers/net/ethernet/netronome/nfp/flower/cmsg.h @@ -82,7 +82,6 @@ #define NFP_FL_OUT_FLAGS_TYPE_IDX GENMASK(2, 0) #define NFP_FL_PUSH_VLAN_PRIO GENMASK(15, 13) -#define NFP_FL_PUSH_VLAN_CFI BIT(12) #define NFP_FL_PUSH_VLAN_VID GENMASK(11, 0) #define IPV6_FLOW_LABEL_MASK cpu_to_be32(0x000fffff) -- cgit v1.2.3-59-g8ed1b