| Message ID | 20241026041249.1267664-4-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 12:12:48PM +0800, Yue Haibing wrote: > ixgbe_run_xdp() converts customed xdp action to a negative error code > with the sk_buff pointer type which be checked with IS_ERR in > ixgbe_clean_rx_irq(). Remove this error pointer handing instead use > plain int return value. > > Fixes: 924708081629 ("ixgbe: 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 3/4] ixgbe: Fix passing 0 to >ERR_PTR in ixgbe_run_xdp() > >ixgbe_run_xdp() converts customed xdp action to a negative error code with >the sk_buff pointer type which be checked with IS_ERR in ixgbe_clean_rx_irq(). >Remove this error pointer handing instead use plain int return value. > >Fixes: 924708081629 ("ixgbe: 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> >--- > drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 23 ++++++++----------- > 1 file changed, 9 insertions(+), 14 deletions(-) > Tested-by: Chandan Kumar Rout <chandanx.rout@intel.com> (A Contingent Worker at Intel)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index 8b8404d8c946..78bf97ab0524 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -1908,10 +1908,6 @@ bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring, { struct net_device *netdev = rx_ring->netdev; - /* XDP packets use error pointer so abort at this point */ - if (IS_ERR(skb)) - return true; - /* Verify netdev is present, and that packet does not have any * errors that would be unacceptable to the netdev. */ @@ -2219,9 +2215,9 @@ static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring, return skb; } -static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter, - struct ixgbe_ring *rx_ring, - struct xdp_buff *xdp) +static int ixgbe_run_xdp(struct ixgbe_adapter *adapter, + struct ixgbe_ring *rx_ring, + struct xdp_buff *xdp) { int err, result = IXGBE_XDP_PASS; struct bpf_prog *xdp_prog; @@ -2271,7 +2267,7 @@ static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter, break; } xdp_out: - return ERR_PTR(-result); + return result; } static unsigned int ixgbe_rx_frame_truesize(struct ixgbe_ring *rx_ring, @@ -2329,6 +2325,7 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, unsigned int offset = rx_ring->rx_offset; unsigned int xdp_xmit = 0; struct xdp_buff xdp; + int xdp_res = 0; /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ #if (PAGE_SIZE < 8192) @@ -2374,12 +2371,10 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, /* At larger PAGE_SIZE, frame_sz depend on len size */ xdp.frame_sz = ixgbe_rx_frame_truesize(rx_ring, size); #endif - skb = ixgbe_run_xdp(adapter, rx_ring, &xdp); + xdp_res = ixgbe_run_xdp(adapter, rx_ring, &xdp); } - if (IS_ERR(skb)) { - unsigned int xdp_res = -PTR_ERR(skb); - + if (xdp_res) { if (xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)) { xdp_xmit |= xdp_res; ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size); @@ -2399,7 +2394,7 @@ static int ixgbe_clean_rx_irq(struct ixgbe_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; @@ -2413,7 +2408,7 @@ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, continue; /* verify the packet layout is correct */ - if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) + if (xdp_res || ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) continue; /* probably a little skewed due to removing CRC */
ixgbe_run_xdp() converts customed xdp action to a negative error code with the sk_buff pointer type which be checked with IS_ERR in ixgbe_clean_rx_irq(). Remove this error pointer handing instead use plain int return value. Fixes: 924708081629 ("ixgbe: 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> --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 23 ++++++++----------- 1 file changed, 9 insertions(+), 14 deletions(-)