diff options
author | Lorenzo Bianconi <lorenzo@kernel.org> | 2020-11-20 20:05:43 +0300 |
---|---|---|
committer | Jakub Kicinski <kuba@kernel.org> | 2020-11-25 02:09:41 +0300 |
commit | eb33f11864fbbcf976ddca4a96fca02d5e4b3733 (patch) | |
tree | fa8332f4af9368cd774dd9b9a13a4cc1cce11b3d /drivers/net/ethernet/marvell/mvneta.c | |
parent | 05c748f7d09ab1104b309a110f61560945f73f8b (diff) | |
download | linux-eb33f11864fbbcf976ddca4a96fca02d5e4b3733.tar.xz |
net: mvneta: move skb_shared_info in mvneta_xdp_put_buff caller
Pass skb_shared_info pointer from mvneta_xdp_put_buff caller. This is a
preliminary patch to reduce accesses to skb_shared_info area and reduce
cache misses.
Remove napi parameter in mvneta_xdp_put_buff signature since it is always
run in NAPI context
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/marvell/mvneta.c')
-rw-r--r-- | drivers/net/ethernet/marvell/mvneta.c | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c index 60a285f3a55f..17c446b1cb94 100644 --- a/drivers/net/ethernet/marvell/mvneta.c +++ b/drivers/net/ethernet/marvell/mvneta.c @@ -2033,16 +2033,16 @@ int mvneta_rx_refill_queue(struct mvneta_port *pp, struct mvneta_rx_queue *rxq) static void mvneta_xdp_put_buff(struct mvneta_port *pp, struct mvneta_rx_queue *rxq, - struct xdp_buff *xdp, int sync_len, bool napi) + struct xdp_buff *xdp, struct skb_shared_info *sinfo, + int sync_len) { - struct skb_shared_info *sinfo = xdp_get_shared_info_from_buff(xdp); int i; for (i = 0; i < sinfo->nr_frags; i++) page_pool_put_full_page(rxq->page_pool, - skb_frag_page(&sinfo->frags[i]), napi); + skb_frag_page(&sinfo->frags[i]), true); page_pool_put_page(rxq->page_pool, virt_to_head_page(xdp->data), - sync_len, napi); + sync_len, true); } static int @@ -2179,6 +2179,7 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq, struct bpf_prog *prog, struct xdp_buff *xdp, u32 frame_sz, struct mvneta_stats *stats) { + struct skb_shared_info *sinfo = xdp_get_shared_info_from_buff(xdp); unsigned int len, data_len, sync; u32 ret, act; @@ -2199,7 +2200,7 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq, err = xdp_do_redirect(pp->dev, xdp, prog); if (unlikely(err)) { - mvneta_xdp_put_buff(pp, rxq, xdp, sync, true); + mvneta_xdp_put_buff(pp, rxq, xdp, sinfo, sync); ret = MVNETA_XDP_DROPPED; } else { ret = MVNETA_XDP_REDIR; @@ -2210,7 +2211,7 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq, case XDP_TX: ret = mvneta_xdp_xmit_back(pp, xdp); if (ret != MVNETA_XDP_TX) - mvneta_xdp_put_buff(pp, rxq, xdp, sync, true); + mvneta_xdp_put_buff(pp, rxq, xdp, sinfo, sync); break; default: bpf_warn_invalid_xdp_action(act); @@ -2219,7 +2220,7 @@ mvneta_run_xdp(struct mvneta_port *pp, struct mvneta_rx_queue *rxq, trace_xdp_exception(pp->dev, prog, act); fallthrough; case XDP_DROP: - mvneta_xdp_put_buff(pp, rxq, xdp, sync, true); + mvneta_xdp_put_buff(pp, rxq, xdp, sinfo, sync); ret = MVNETA_XDP_DROPPED; stats->xdp_drop++; break; @@ -2406,7 +2407,10 @@ static int mvneta_rx_swbm(struct napi_struct *napi, continue; if (size) { - mvneta_xdp_put_buff(pp, rxq, &xdp_buf, -1, true); + struct skb_shared_info *sinfo; + + sinfo = xdp_get_shared_info_from_buff(&xdp_buf); + mvneta_xdp_put_buff(pp, rxq, &xdp_buf, sinfo, -1); goto next; } @@ -2417,8 +2421,10 @@ static int mvneta_rx_swbm(struct napi_struct *napi, skb = mvneta_swbm_build_skb(pp, rxq, &xdp_buf, desc_status); if (IS_ERR(skb)) { struct mvneta_pcpu_stats *stats = this_cpu_ptr(pp->stats); + struct skb_shared_info *sinfo; - mvneta_xdp_put_buff(pp, rxq, &xdp_buf, -1, true); + sinfo = xdp_get_shared_info_from_buff(&xdp_buf); + mvneta_xdp_put_buff(pp, rxq, &xdp_buf, sinfo, -1); u64_stats_update_begin(&stats->syncp); stats->es.skb_alloc_error++; @@ -2438,8 +2444,12 @@ next: } rcu_read_unlock(); - if (xdp_buf.data_hard_start) - mvneta_xdp_put_buff(pp, rxq, &xdp_buf, -1, true); + if (xdp_buf.data_hard_start) { + struct skb_shared_info *sinfo; + + sinfo = xdp_get_shared_info_from_buff(&xdp_buf); + mvneta_xdp_put_buff(pp, rxq, &xdp_buf, sinfo, -1); + } if (ps.xdp_redirect) xdp_do_flush_map(); |