diff options
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 2 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_hw.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.c | 43 | ||||
| -rw-r--r-- | drivers/net/ethernet/apm/xgene/xgene_enet_main.h | 1 |
4 files changed, 30 insertions, 17 deletions
diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c index c72a17e98f13..2a835e07adfb 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c @@ -494,7 +494,7 @@ static void xgene_gmac_set_speed(struct xgene_enet_pdata *pdata) break; } - mc2 |= FULL_DUPLEX2 | PAD_CRC; + mc2 |= FULL_DUPLEX2 | PAD_CRC | LENGTH_CHK; xgene_enet_wr_mcx_mac(pdata, MAC_CONFIG_2_ADDR, mc2); xgene_enet_wr_mcx_mac(pdata, INTERFACE_CONTROL_ADDR, intf_ctl); xgene_enet_wr_csr(pdata, RGMII_REG_0_ADDR, rgmii); diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h index b6cd625fad84..d250bfe94d24 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.h @@ -216,6 +216,7 @@ enum xgene_enet_rm { #define ENET_GHD_MODE BIT(26) #define FULL_DUPLEX2 BIT(0) #define PAD_CRC BIT(2) +#define LENGTH_CHK BIT(4) #define SCAN_AUTO_INCR BIT(5) #define TBYT_ADDR 0x38 #define TPKT_ADDR 0x39 diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c index e881365160e4..5f37ed3506d5 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.c +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.c @@ -658,12 +658,24 @@ static void xgene_enet_free_pagepool(struct xgene_enet_desc_ring *buf_pool, buf_pool->head = head; } +/* Errata 10GE_8 and ENET_11 - allow packet with length <=64B */ +static bool xgene_enet_errata_10GE_8(struct sk_buff *skb, u32 len, u8 status) +{ + if (status == INGRESS_PKT_LEN && len == ETHER_MIN_PACKET) { + if (ntohs(eth_hdr(skb)->h_proto) < 46) + return true; + } + + return false; +} + static int xgene_enet_rx_frame(struct xgene_enet_desc_ring *rx_ring, struct xgene_enet_raw_desc *raw_desc, struct xgene_enet_raw_desc *exp_desc) { struct xgene_enet_desc_ring *buf_pool, *page_pool; u32 datalen, frag_size, skb_index; + struct xgene_enet_pdata *pdata; struct net_device *ndev; dma_addr_t dma_addr; struct sk_buff *skb; @@ -676,6 +688,7 @@ static int xgene_enet_rx_frame(struct xgene_enet_desc_ring *rx_ring, bool nv; ndev = rx_ring->ndev; + pdata = netdev_priv(ndev); dev = ndev_to_dev(rx_ring->ndev); buf_pool = rx_ring->buf_pool; page_pool = rx_ring->page_pool; @@ -686,30 +699,29 @@ static int xgene_enet_rx_frame(struct xgene_enet_desc_ring *rx_ring, skb = buf_pool->rx_skb[skb_index]; buf_pool->rx_skb[skb_index] = NULL; + datalen = xgene_enet_get_data_len(le64_to_cpu(raw_desc->m1)); + skb_put(skb, datalen); + prefetch(skb->data - NET_IP_ALIGN); + skb->protocol = eth_type_trans(skb, ndev); + /* checking for error */ status = (GET_VAL(ELERR, le64_to_cpu(raw_desc->m0)) << LERR_LEN) | GET_VAL(LERR, le64_to_cpu(raw_desc->m0)); if (unlikely(status)) { - dev_kfree_skb_any(skb); - xgene_enet_free_pagepool(page_pool, raw_desc, exp_desc); - xgene_enet_parse_error(rx_ring, netdev_priv(rx_ring->ndev), - status); - ret = -EIO; - goto out; + if (!xgene_enet_errata_10GE_8(skb, datalen, status)) { + dev_kfree_skb_any(skb); + xgene_enet_free_pagepool(page_pool, raw_desc, exp_desc); + xgene_enet_parse_error(rx_ring, pdata, status); + goto out; + } } - /* strip off CRC as HW isn't doing this */ - datalen = xgene_enet_get_data_len(le64_to_cpu(raw_desc->m1)); - nv = GET_VAL(NV, le64_to_cpu(raw_desc->m0)); - if (!nv) + if (!nv) { + /* strip off CRC as HW isn't doing this */ datalen -= 4; - - skb_put(skb, datalen); - prefetch(skb->data - NET_IP_ALIGN); - - if (!nv) goto skip_jumbo; + } slots = page_pool->slots - 1; head = page_pool->head; @@ -738,7 +750,6 @@ static int xgene_enet_rx_frame(struct xgene_enet_desc_ring *rx_ring, skip_jumbo: skb_checksum_none_assert(skb); - skb->protocol = eth_type_trans(skb, ndev); xgene_enet_rx_csum(skb); rx_ring->rx_packets++; diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h index 52571741da9f..0d4be2425ebc 100644 --- a/drivers/net/ethernet/apm/xgene/xgene_enet_main.h +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_main.h @@ -41,6 +41,7 @@ #include "../../../phy/mdio-xgene.h" #define XGENE_DRV_VERSION "v1.0" +#define ETHER_MIN_PACKET 64 #define XGENE_ENET_STD_MTU 1536 #define XGENE_ENET_MAX_MTU 9600 #define SKB_BUFFER_SIZE (XGENE_ENET_STD_MTU - NET_IP_ALIGN) |