diff options
author | Ian Campbell <Ian.Campbell@citrix.com> | 2011-10-19 23:01:46 (GMT) |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2011-10-21 06:52:52 (GMT) |
commit | e91b0f2491f7a7b21c4e562df09f3dbe551f0fe2 (patch) | |
tree | 2299183e6254d11cb040cfaa52ad3990c5abefdc /drivers | |
parent | 311761c8a553adaa3ad7482b1fdde1ce9042d3e2 (diff) | |
download | linux-fsl-qoriq-e91b0f2491f7a7b21c4e562df09f3dbe551f0fe2.tar.xz |
cxgb4: convert to SKB paged frag API.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Dimitris Michailidis <dm@chelsio.com>
Cc: netdev@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/cxgb4.h | 2 | ||||
-rw-r--r-- | drivers/net/ethernet/chelsio/cxgb4/sge.c | 45 |
2 files changed, 24 insertions, 23 deletions
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h index 223a7f7..0fe1885 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h +++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4.h @@ -326,7 +326,7 @@ struct sge_fl { /* SGE free-buffer queue state */ /* A packet gather list */ struct pkt_gl { - skb_frag_t frags[MAX_SKB_FRAGS]; + struct page_frag frags[MAX_SKB_FRAGS]; void *va; /* virtual address of first byte */ unsigned int nfrags; /* # of fragments */ unsigned int tot_len; /* total length of fragments */ diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c index 14f31d3..ddc1698 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/sge.c +++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c @@ -215,8 +215,8 @@ static int map_skb(struct device *dev, const struct sk_buff *skb, end = &si->frags[si->nr_frags]; for (fp = si->frags; fp < end; fp++) { - *++addr = dma_map_page(dev, fp->page, fp->page_offset, - skb_frag_size(fp), DMA_TO_DEVICE); + *++addr = skb_frag_dma_map(dev, fp, 0, skb_frag_size(fp), + DMA_TO_DEVICE); if (dma_mapping_error(dev, *addr)) goto unwind; } @@ -1409,22 +1409,23 @@ int cxgb4_ofld_send(struct net_device *dev, struct sk_buff *skb) } EXPORT_SYMBOL(cxgb4_ofld_send); -static inline void copy_frags(struct skb_shared_info *ssi, +static inline void copy_frags(struct sk_buff *skb, const struct pkt_gl *gl, unsigned int offset) { - unsigned int n; + int i; /* usually there's just one frag */ - ssi->frags[0].page = gl->frags[0].page; - ssi->frags[0].page_offset = gl->frags[0].page_offset + offset; - skb_frag_size_set(&ssi->frags[0], skb_frag_size(&gl->frags[0]) - offset); - ssi->nr_frags = gl->nfrags; - n = gl->nfrags - 1; - if (n) - memcpy(&ssi->frags[1], &gl->frags[1], n * sizeof(skb_frag_t)); + __skb_fill_page_desc(skb, 0, gl->frags[0].page, + gl->frags[0].offset + offset, + gl->frags[0].size - offset); + skb_shinfo(skb)->nr_frags = gl->nfrags; + for (i = 1; i < gl->nfrags; i++) + __skb_fill_page_desc(skb, i, gl->frags[i].page, + gl->frags[i].offset, + gl->frags[i].size); /* get a reference to the last page, we don't own it */ - get_page(gl->frags[n].page); + get_page(gl->frags[gl->nfrags - 1].page); } /** @@ -1459,7 +1460,7 @@ struct sk_buff *cxgb4_pktgl_to_skb(const struct pkt_gl *gl, __skb_put(skb, pull_len); skb_copy_to_linear_data(skb, gl->va, pull_len); - copy_frags(skb_shinfo(skb), gl, pull_len); + copy_frags(skb, gl, pull_len); skb->len = gl->tot_len; skb->data_len = skb->len - pull_len; skb->truesize += skb->data_len; @@ -1478,7 +1479,7 @@ EXPORT_SYMBOL(cxgb4_pktgl_to_skb); static void t4_pktgl_free(const struct pkt_gl *gl) { int n; - const skb_frag_t *p; + const struct page_frag *p; for (p = gl->frags, n = gl->nfrags - 1; n--; p++) put_page(p->page); @@ -1522,7 +1523,7 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl, return; } - copy_frags(skb_shinfo(skb), gl, RX_PKT_PAD); + copy_frags(skb, gl, RX_PKT_PAD); skb->len = gl->tot_len - RX_PKT_PAD; skb->data_len = skb->len; skb->truesize += skb->data_len; @@ -1698,7 +1699,7 @@ static int process_responses(struct sge_rspq *q, int budget) rmb(); rsp_type = RSPD_TYPE(rc->type_gen); if (likely(rsp_type == RSP_TYPE_FLBUF)) { - skb_frag_t *fp; + struct page_frag *fp; struct pkt_gl si; const struct rx_sw_desc *rsd; u32 len = ntohl(rc->pldbuflen_qid), bufsz, frags; @@ -1717,9 +1718,9 @@ static int process_responses(struct sge_rspq *q, int budget) rsd = &rxq->fl.sdesc[rxq->fl.cidx]; bufsz = get_buf_size(rsd); fp->page = rsd->page; - fp->page_offset = q->offset; - skb_frag_size_set(fp, min(bufsz, len)); - len -= skb_frag_size(fp); + fp->offset = q->offset; + fp->size = min(bufsz, len); + len -= fp->size; if (!len) break; unmap_rx_buf(q->adap, &rxq->fl); @@ -1731,16 +1732,16 @@ static int process_responses(struct sge_rspq *q, int budget) */ dma_sync_single_for_cpu(q->adap->pdev_dev, get_buf_addr(rsd), - skb_frag_size(fp), DMA_FROM_DEVICE); + fp->size, DMA_FROM_DEVICE); si.va = page_address(si.frags[0].page) + - si.frags[0].page_offset; + si.frags[0].offset; prefetch(si.va); si.nfrags = frags + 1; ret = q->handler(q, q->cur_desc, &si); if (likely(ret == 0)) - q->offset += ALIGN(skb_frag_size(fp), FL_ALIGN); + q->offset += ALIGN(fp->size, FL_ALIGN); else restore_rx_bufs(&si, &rxq->fl, frags); } else if (likely(rsp_type == RSP_TYPE_CPL)) { |