| Message ID | 20241026041249.1267664-5-yuehaibing@huawei.com (mailing list archive) |
|---|---|
| State | Awaiting Upstream |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Fix passing 0 to ERR_PTR in intel ether drivers | expand |
On Sat, Oct 26, 2024 at 12:12:49PM +0800, Yue Haibing wrote: > ixgbevf_run_xdp() converts customed xdp action to a negative error code > with the sk_buff pointer type which be checked with IS_ERR in > ixgbevf_clean_rx_irq(). Remove this error pointer handing instead use > plain int return value. > > Fixes: c7aec59657b6 ("ixgbevf: Add XDP support for pass and drop actions") > Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> > Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> > Signed-off-by: Yue Haibing <yuehaibing@huawei.com> Reviewed-by: Simon Horman <horms@kernel.org>
>-----Original Message----- >From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of Yue >Haibing >Sent: Saturday, October 26, 2024 9:43 AM >To: Nguyen, Anthony L <anthony.l.nguyen@intel.com>; Kitszel, Przemyslaw ><przemyslaw.kitszel@intel.com>; davem@davemloft.net; >edumazet@google.com; kuba@kernel.org; pabeni@redhat.com; >ast@kernel.org; daniel@iogearbox.net; hawk@kernel.org; >john.fastabend@gmail.com; Fijalkowski, Maciej ><maciej.fijalkowski@intel.com>; vedang.patel@intel.com; Joseph, Jithu ><jithu.joseph@intel.com>; andre.guedes@intel.com; horms@kernel.org; Keller, >Jacob E <jacob.e.keller@intel.com>; sven.auhagen@voleatech.de; >alexander.h.duyck@intel.com >Cc: intel-wired-lan@lists.osuosl.org; netdev@vger.kernel.org; linux- >kernel@vger.kernel.org; bpf@vger.kernel.org; yuehaibing@huawei.com >Subject: [Intel-wired-lan] [PATCH v4 net-next 4/4] ixgbevf: Fix passing 0 to >ERR_PTR in ixgbevf_run_xdp() > >ixgbevf_run_xdp() converts customed xdp action to a negative error code with >the sk_buff pointer type which be checked with IS_ERR in >ixgbevf_clean_rx_irq(). Remove this error pointer handing instead use plain int >return value. > >Fixes: c7aec59657b6 ("ixgbevf: Add XDP support for pass and drop actions") >Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> >Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> >Signed-off-by: Yue Haibing <yuehaibing@huawei.com> >--- > .../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 23 ++++++++----------- > 1 file changed, 10 insertions(+), 13 deletions(-) > Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c index 149911e3002a..183d2305d058 100644 --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -732,10 +732,6 @@ static bool ixgbevf_cleanup_headers(struct ixgbevf_ring *rx_ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb) { - /* XDP packets use error pointer so abort at this point */ - if (IS_ERR(skb)) - return true; - /* verify that the packet does not have any known errors */ if (unlikely(ixgbevf_test_staterr(rx_desc, IXGBE_RXDADV_ERR_FRAME_ERR_MASK))) { @@ -1044,9 +1040,9 @@ static int ixgbevf_xmit_xdp_ring(struct ixgbevf_ring *ring, return IXGBEVF_XDP_TX; } -static struct sk_buff *ixgbevf_run_xdp(struct ixgbevf_adapter *adapter, - struct ixgbevf_ring *rx_ring, - struct xdp_buff *xdp) +static int ixgbevf_run_xdp(struct ixgbevf_adapter *adapter, + struct ixgbevf_ring *rx_ring, + struct xdp_buff *xdp) { int result = IXGBEVF_XDP_PASS; struct ixgbevf_ring *xdp_ring; @@ -1080,7 +1076,7 @@ static struct sk_buff *ixgbevf_run_xdp(struct ixgbevf_adapter *adapter, break; } xdp_out: - return ERR_PTR(-result); + return result; } static unsigned int ixgbevf_rx_frame_truesize(struct ixgbevf_ring *rx_ring, @@ -1122,6 +1118,7 @@ static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, struct sk_buff *skb = rx_ring->skb; bool xdp_xmit = false; struct xdp_buff xdp; + int xdp_res = 0; /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ #if (PAGE_SIZE < 8192) @@ -1165,11 +1162,11 @@ static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, /* At larger PAGE_SIZE, frame_sz depend on len size */ xdp.frame_sz = ixgbevf_rx_frame_truesize(rx_ring, size); #endif - skb = ixgbevf_run_xdp(adapter, rx_ring, &xdp); + xdp_res = ixgbevf_run_xdp(adapter, rx_ring, &xdp); } - if (IS_ERR(skb)) { - if (PTR_ERR(skb) == -IXGBEVF_XDP_TX) { + if (xdp_res) { + if (xdp_res == IXGBEVF_XDP_TX) { xdp_xmit = true; ixgbevf_rx_buffer_flip(rx_ring, rx_buffer, size); @@ -1189,7 +1186,7 @@ static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, } /* exit if we failed to retrieve a buffer */ - if (!skb) { + if (!xdp_res && !skb) { rx_ring->rx_stats.alloc_rx_buff_failed++; rx_buffer->pagecnt_bias++; break; @@ -1203,7 +1200,7 @@ static int ixgbevf_clean_rx_irq(struct ixgbevf_q_vector *q_vector, continue; /* verify the packet layout is correct */ - if (ixgbevf_cleanup_headers(rx_ring, rx_desc, skb)) { + if (xdp_res || ixgbevf_cleanup_headers(rx_ring, rx_desc, skb)) { skb = NULL; continue; }
ixgbevf_run_xdp() converts customed xdp action to a negative error code with the sk_buff pointer type which be checked with IS_ERR in ixgbevf_clean_rx_irq(). Remove this error pointer handing instead use plain int return value. Fixes: c7aec59657b6 ("ixgbevf: Add XDP support for pass and drop actions") Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com> Signed-off-by: Yue Haibing <yuehaibing@huawei.com> --- .../net/ethernet/intel/ixgbevf/ixgbevf_main.c | 23 ++++++++----------- 1 file changed, 10 insertions(+), 13 deletions(-)