diff options
Diffstat (limited to 'drivers/net/ethernet/intel/i40e/i40e_txrx.c')
-rw-r--r-- | drivers/net/ethernet/intel/i40e/i40e_txrx.c | 190 |
1 files changed, 113 insertions, 77 deletions
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c index e49f31d..a51aa37 100644 --- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c +++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c @@ -39,6 +39,7 @@ static inline __le64 build_ctob(u32 td_cmd, u32 td_offset, unsigned int size, } #define I40E_TXD_CMD (I40E_TX_DESC_CMD_EOP | I40E_TX_DESC_CMD_RS) +#define I40E_FD_CLEAN_DELAY 10 /** * i40e_program_fdir_filter - Program a Flow Director filter * @fdir_data: Packet data that will be filter parameters @@ -50,7 +51,7 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, struct i40e_pf *pf, bool add) { struct i40e_filter_program_desc *fdir_desc; - struct i40e_tx_buffer *tx_buf; + struct i40e_tx_buffer *tx_buf, *first; struct i40e_tx_desc *tx_desc; struct i40e_ring *tx_ring; unsigned int fpt, dcc; @@ -58,6 +59,7 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, struct device *dev; dma_addr_t dma; u32 td_cmd = 0; + u16 delay = 0; u16 i; /* find existing FDIR VSI */ @@ -71,6 +73,17 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, tx_ring = vsi->tx_rings[0]; dev = tx_ring->dev; + /* we need two descriptors to add/del a filter and we can wait */ + do { + if (I40E_DESC_UNUSED(tx_ring) > 1) + break; + msleep_interruptible(1); + delay++; + } while (delay < I40E_FD_CLEAN_DELAY); + + if (!(I40E_DESC_UNUSED(tx_ring) > 1)) + return -EAGAIN; + dma = dma_map_single(dev, raw_packet, I40E_FDIR_MAX_RAW_PACKET_SIZE, DMA_TO_DEVICE); if (dma_mapping_error(dev, dma)) @@ -79,8 +92,10 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, /* grab the next descriptor */ i = tx_ring->next_to_use; fdir_desc = I40E_TX_FDIRDESC(tx_ring, i); + first = &tx_ring->tx_bi[i]; + memset(first, 0, sizeof(struct i40e_tx_buffer)); - tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0; + tx_ring->next_to_use = ((i + 1) < tx_ring->count) ? i + 1 : 0; fpt = (fdir_data->q_index << I40E_TXD_FLTR_QW0_QINDEX_SHIFT) & I40E_TXD_FLTR_QW0_QINDEX_MASK; @@ -100,8 +115,6 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, I40E_TXD_FLTR_QW0_DEST_VSI_SHIFT) & I40E_TXD_FLTR_QW0_DEST_VSI_MASK; - fdir_desc->qindex_flex_ptype_vsi = cpu_to_le32(fpt); - dcc = I40E_TX_DESC_DTYPE_FILTER_PROG; if (add) @@ -124,6 +137,8 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, I40E_TXD_FLTR_QW1_CNTINDEX_MASK; } + fdir_desc->qindex_flex_ptype_vsi = cpu_to_le32(fpt); + fdir_desc->rsvd = cpu_to_le32(0); fdir_desc->dtype_cmd_cntindex = cpu_to_le32(dcc); fdir_desc->fd_id = cpu_to_le32(fdir_data->fd_id); @@ -132,7 +147,9 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, tx_desc = I40E_TX_DESC(tx_ring, i); tx_buf = &tx_ring->tx_bi[i]; - tx_ring->next_to_use = (i + 1 < tx_ring->count) ? i + 1 : 0; + tx_ring->next_to_use = ((i + 1) < tx_ring->count) ? i + 1 : 0; + + memset(tx_buf, 0, sizeof(struct i40e_tx_buffer)); /* record length, and DMA address */ dma_unmap_len_set(tx_buf, len, I40E_FDIR_MAX_RAW_PACKET_SIZE); @@ -141,6 +158,9 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, tx_desc->buffer_addr = cpu_to_le64(dma); td_cmd = I40E_TXD_CMD | I40E_TX_DESC_CMD_DUMMY; + tx_buf->tx_flags = I40E_TX_FLAGS_FD_SB; + tx_buf->raw_buf = (void *)raw_packet; + tx_desc->cmd_type_offset_bsz = build_ctob(td_cmd, 0, I40E_FDIR_MAX_RAW_PACKET_SIZE, 0); @@ -148,14 +168,12 @@ int i40e_program_fdir_filter(struct i40e_fdir_filter *fdir_data, u8 *raw_packet, tx_buf->time_stamp = jiffies; /* Force memory writes to complete before letting h/w - * know there are new descriptors to fetch. (Only - * applicable for weak-ordered memory model archs, - * such as IA-64). + * know there are new descriptors to fetch. */ wmb(); /* Mark the data descriptor to be watched */ - tx_buf->next_to_watch = tx_desc; + first->next_to_watch = tx_desc; writel(tx_ring->next_to_use, tx_ring->tail); return 0; @@ -170,24 +188,27 @@ dma_fail: * i40e_add_del_fdir_udpv4 - Add/Remove UDPv4 filters * @vsi: pointer to the targeted VSI * @fd_data: the flow director data required for the FDir descriptor - * @raw_packet: the pre-allocated packet buffer for FDir * @add: true adds a filter, false removes it * * Returns 0 if the filters were successfully added or removed **/ static int i40e_add_del_fdir_udpv4(struct i40e_vsi *vsi, struct i40e_fdir_filter *fd_data, - u8 *raw_packet, bool add) + bool add) { struct i40e_pf *pf = vsi->back; struct udphdr *udp; struct iphdr *ip; bool err = false; + u8 *raw_packet; int ret; static char packet[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x08, 0, 0x45, 0, 0, 0x1c, 0, 0, 0x40, 0, 0x40, 0x11, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; + raw_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE, GFP_KERNEL); + if (!raw_packet) + return -ENOMEM; memcpy(raw_packet, packet, I40E_UDPIP_DUMMY_PACKET_LEN); ip = (struct iphdr *)(raw_packet + IP_HEADER_OFFSET); @@ -220,19 +241,19 @@ static int i40e_add_del_fdir_udpv4(struct i40e_vsi *vsi, * i40e_add_del_fdir_tcpv4 - Add/Remove TCPv4 filters * @vsi: pointer to the targeted VSI * @fd_data: the flow director data required for the FDir descriptor - * @raw_packet: the pre-allocated packet buffer for FDir * @add: true adds a filter, false removes it * * Returns 0 if the filters were successfully added or removed **/ static int i40e_add_del_fdir_tcpv4(struct i40e_vsi *vsi, struct i40e_fdir_filter *fd_data, - u8 *raw_packet, bool add) + bool add) { struct i40e_pf *pf = vsi->back; struct tcphdr *tcp; struct iphdr *ip; bool err = false; + u8 *raw_packet; int ret; /* Dummy packet */ static char packet[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x08, 0, @@ -240,6 +261,9 @@ static int i40e_add_del_fdir_tcpv4(struct i40e_vsi *vsi, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x80, 0x11, 0x0, 0x72, 0, 0, 0, 0}; + raw_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE, GFP_KERNEL); + if (!raw_packet) + return -ENOMEM; memcpy(raw_packet, packet, I40E_TCPIP_DUMMY_PACKET_LEN); ip = (struct iphdr *)(raw_packet + IP_HEADER_OFFSET); @@ -271,19 +295,6 @@ static int i40e_add_del_fdir_tcpv4(struct i40e_vsi *vsi, fd_data->pctype, ret); } - fd_data->pctype = I40E_FILTER_PCTYPE_NONF_IPV4_TCP; - - ret = i40e_program_fdir_filter(fd_data, raw_packet, pf, add); - if (ret) { - dev_info(&pf->pdev->dev, - "Filter command send failed for PCTYPE %d (ret = %d)\n", - fd_data->pctype, ret); - err = true; - } else { - dev_info(&pf->pdev->dev, "Filter OK for PCTYPE %d (ret = %d)\n", - fd_data->pctype, ret); - } - return err ? -EOPNOTSUPP : 0; } @@ -292,14 +303,13 @@ static int i40e_add_del_fdir_tcpv4(struct i40e_vsi *vsi, * a specific flow spec * @vsi: pointer to the targeted VSI * @fd_data: the flow director data required for the FDir descriptor - * @raw_packet: the pre-allocated packet buffer for FDir * @add: true adds a filter, false removes it * * Always returns -EOPNOTSUPP **/ static int i40e_add_del_fdir_sctpv4(struct i40e_vsi *vsi, struct i40e_fdir_filter *fd_data, - u8 *raw_packet, bool add) + bool add) { return -EOPNOTSUPP; } @@ -310,33 +320,36 @@ static int i40e_add_del_fdir_sctpv4(struct i40e_vsi *vsi, * a specific flow spec * @vsi: pointer to the targeted VSI * @fd_data: the flow director data required for the FDir descriptor - * @raw_packet: the pre-allocated packet buffer for FDir * @add: true adds a filter, false removes it * * Returns 0 if the filters were successfully added or removed **/ static int i40e_add_del_fdir_ipv4(struct i40e_vsi *vsi, struct i40e_fdir_filter *fd_data, - u8 *raw_packet, bool add) + bool add) { struct i40e_pf *pf = vsi->back; struct iphdr *ip; bool err = false; + u8 *raw_packet; int ret; int i; static char packet[] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0x08, 0, 0x45, 0, 0, 0x14, 0, 0, 0x40, 0, 0x40, 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; - memcpy(raw_packet, packet, I40E_IP_DUMMY_PACKET_LEN); - ip = (struct iphdr *)(raw_packet + IP_HEADER_OFFSET); - - ip->saddr = fd_data->src_ip[0]; - ip->daddr = fd_data->dst_ip[0]; - ip->protocol = 0; - for (i = I40E_FILTER_PCTYPE_NONF_IPV4_OTHER; i <= I40E_FILTER_PCTYPE_FRAG_IPV4; i++) { + raw_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE, GFP_KERNEL); + if (!raw_packet) + return -ENOMEM; + memcpy(raw_packet, packet, I40E_IP_DUMMY_PACKET_LEN); + ip = (struct iphdr *)(raw_packet + IP_HEADER_OFFSET); + + ip->saddr = fd_data->src_ip[0]; + ip->daddr = fd_data->dst_ip[0]; + ip->protocol = 0; + fd_data->pctype = i; ret = i40e_program_fdir_filter(fd_data, raw_packet, pf, add); @@ -366,50 +379,34 @@ int i40e_add_del_fdir(struct i40e_vsi *vsi, struct i40e_fdir_filter *input, bool add) { struct i40e_pf *pf = vsi->back; - u8 *raw_packet; int ret; - /* Populate the Flow Director that we have at the moment - * and allocate the raw packet buffer for the calling functions - */ - raw_packet = kzalloc(I40E_FDIR_MAX_RAW_PACKET_SIZE, GFP_KERNEL); - if (!raw_packet) - return -ENOMEM; - switch (input->flow_type & ~FLOW_EXT) { case TCP_V4_FLOW: - ret = i40e_add_del_fdir_tcpv4(vsi, input, raw_packet, - add); + ret = i40e_add_del_fdir_tcpv4(vsi, input, add); break; case UDP_V4_FLOW: - ret = i40e_add_del_fdir_udpv4(vsi, input, raw_packet, - add); + ret = i40e_add_del_fdir_udpv4(vsi, input, add); break; case SCTP_V4_FLOW: - ret = i40e_add_del_fdir_sctpv4(vsi, input, raw_packet, - add); + ret = i40e_add_del_fdir_sctpv4(vsi, input, add); break; case IPV4_FLOW: - ret = i40e_add_del_fdir_ipv4(vsi, input, raw_packet, - add); + ret = i40e_add_del_fdir_ipv4(vsi, input, add); break; case IP_USER_FLOW: switch (input->ip4_proto) { case IPPROTO_TCP: - ret = i40e_add_del_fdir_tcpv4(vsi, input, - raw_packet, add); + ret = i40e_add_del_fdir_tcpv4(vsi, input, add); break; case IPPROTO_UDP: - ret = i40e_add_del_fdir_udpv4(vsi, input, - raw_packet, add); + ret = i40e_add_del_fdir_udpv4(vsi, input, add); break; case IPPROTO_SCTP: - ret = i40e_add_del_fdir_sctpv4(vsi, input, - raw_packet, add); + ret = i40e_add_del_fdir_sctpv4(vsi, input, add); break; default: - ret = i40e_add_del_fdir_ipv4(vsi, input, - raw_packet, add); + ret = i40e_add_del_fdir_ipv4(vsi, input, add); break; } break; @@ -419,7 +416,7 @@ int i40e_add_del_fdir(struct i40e_vsi *vsi, ret = -EINVAL; } - kfree(raw_packet); + /* The buffer allocated here is freed by the i40e_clean_tx_ring() */ return ret; } @@ -450,22 +447,24 @@ static void i40e_fd_handle_status(struct i40e_ring *rx_ring, rx_desc->wb.qword0.hi_dword.fd_id); /* filter programming failed most likely due to table full */ - fcnt_prog = i40e_get_current_fd_count(pf); - fcnt_avail = i40e_get_fd_cnt_all(pf); + fcnt_prog = i40e_get_cur_guaranteed_fd_count(pf); + fcnt_avail = pf->fdir_pf_filter_count; /* If ATR is running fcnt_prog can quickly change, * if we are very close to full, it makes sense to disable * FD ATR/SB and then re-enable it when there is room. */ if (fcnt_prog >= (fcnt_avail - I40E_FDIR_BUFFER_FULL_MARGIN)) { /* Turn off ATR first */ - if (pf->flags & I40E_FLAG_FD_ATR_ENABLED) { - pf->flags &= ~I40E_FLAG_FD_ATR_ENABLED; + if ((pf->flags & I40E_FLAG_FD_ATR_ENABLED) && + !(pf->auto_disable_flags & + I40E_FLAG_FD_ATR_ENABLED)) { dev_warn(&pdev->dev, "FD filter space full, ATR for further flows will be turned off\n"); pf->auto_disable_flags |= I40E_FLAG_FD_ATR_ENABLED; pf->flags |= I40E_FLAG_FDIR_REQUIRES_REINIT; - } else if (pf->flags & I40E_FLAG_FD_SB_ENABLED) { - pf->flags &= ~I40E_FLAG_FD_SB_ENABLED; + } else if ((pf->flags & I40E_FLAG_FD_SB_ENABLED) && + !(pf->auto_disable_flags & + I40E_FLAG_FD_SB_ENABLED)) { dev_warn(&pdev->dev, "FD filter space full, new ntuple rules will not be added\n"); pf->auto_disable_flags |= I40E_FLAG_FD_SB_ENABLED; @@ -491,7 +490,11 @@ static void i40e_unmap_and_free_tx_resource(struct i40e_ring *ring, struct i40e_tx_buffer *tx_buffer) { if (tx_buffer->skb) { - dev_kfree_skb_any(tx_buffer->skb); + if (tx_buffer->tx_flags & I40E_TX_FLAGS_FD_SB) + kfree(tx_buffer->raw_buf); + else + dev_kfree_skb_any(tx_buffer->skb); + if (dma_unmap_len(tx_buffer, len)) dma_unmap_single(ring->dev, dma_unmap_addr(tx_buffer, dma), @@ -893,6 +896,11 @@ static void i40e_clean_programming_status(struct i40e_ring *rx_ring, if (id == I40E_RX_PROG_STATUS_DESC_FD_FILTER_STATUS) i40e_fd_handle_status(rx_ring, rx_desc, id); +#ifdef I40E_FCOE + else if ((id == I40E_RX_PROG_STATUS_DESC_FCOE_CTXT_PROG_STATUS) || + (id == I40E_RX_PROG_STATUS_DESC_FCOE_CTXT_INVL_STATUS)) + i40e_fcoe_handle_status(rx_ring, rx_desc, id); +#endif } /** @@ -1234,8 +1242,6 @@ static inline void i40e_rx_checksum(struct i40e_vsi *vsi, /* likely incorrect csum if alternate IP extension headers found */ if (ipv6 && - decoded.inner_prot == I40E_RX_PTYPE_INNER_PROT_TCP && - rx_error & (1 << I40E_RX_DESC_ERROR_L4E_SHIFT) && rx_status & (1 << I40E_RX_DESC_STATUS_IPV6EXADD_SHIFT)) /* don't increment checksum err here, non-fatal err */ return; @@ -1488,6 +1494,12 @@ static int i40e_clean_rx_irq(struct i40e_ring *rx_ring, int budget) vlan_tag = rx_status & (1 << I40E_RX_DESC_STATUS_L2TAG1P_SHIFT) ? le16_to_cpu(rx_desc->wb.qword0.lo_dword.l2tag1) : 0; +#ifdef I40E_FCOE + if (!i40e_fcoe_handle_offload(rx_ring, rx_desc, skb)) { + dev_kfree_skb_any(skb); + goto next_desc; + } +#endif i40e_receive_skb(rx_ring, skb, vlan_tag); rx_ring->netdev->last_rx = jiffies; @@ -1701,7 +1713,9 @@ static void i40e_atr(struct i40e_ring *tx_ring, struct sk_buff *skb, I40E_TXD_FLTR_QW1_CNTINDEX_MASK; fdir_desc->qindex_flex_ptype_vsi = cpu_to_le32(flex_ptype); + fdir_desc->rsvd = cpu_to_le32(0); fdir_desc->dtype_cmd_cntindex = cpu_to_le32(dtype_cmd); + fdir_desc->fd_id = cpu_to_le32(0); } /** @@ -1716,9 +1730,15 @@ static void i40e_atr(struct i40e_ring *tx_ring, struct sk_buff *skb, * Returns error code indicate the frame should be dropped upon error and the * otherwise returns 0 to indicate the flags has been set properly. **/ +#ifdef I40E_FCOE +int i40e_tx_prepare_vlan_flags(struct sk_buff *skb, + struct i40e_ring *tx_ring, + u32 *flags) +#else static int i40e_tx_prepare_vlan_flags(struct sk_buff *skb, struct i40e_ring *tx_ring, u32 *flags) +#endif { __be16 protocol = skb->protocol; u32 tx_flags = 0; @@ -1740,9 +1760,8 @@ static int i40e_tx_prepare_vlan_flags(struct sk_buff *skb, } /* Insert 802.1p priority into VLAN header */ - if ((tx_ring->vsi->back->flags & I40E_FLAG_DCB_ENABLED) && - ((tx_flags & (I40E_TX_FLAGS_HW_VLAN | I40E_TX_FLAGS_SW_VLAN)) || - (skb->priority != TC_PRIO_CONTROL))) { + if ((tx_flags & (I40E_TX_FLAGS_HW_VLAN | I40E_TX_FLAGS_SW_VLAN)) || + (skb->priority != TC_PRIO_CONTROL)) { tx_flags &= ~I40E_TX_FLAGS_VLAN_PRIO_MASK; tx_flags |= (skb->priority & 0x7) << I40E_TX_FLAGS_VLAN_PRIO_SHIFT; @@ -1850,7 +1869,8 @@ static int i40e_tsyn(struct i40e_ring *tx_ring, struct sk_buff *skb, * we are not already transmitting a packet to be timestamped */ pf = i40e_netdev_to_pf(tx_ring->netdev); - if (pf->ptp_tx && !pf->ptp_tx_skb) { + if (pf->ptp_tx && + !test_and_set_bit_lock(__I40E_PTP_TX_IN_PROGRESS, &pf->state)) { skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; pf->ptp_tx_skb = skb_get(skb); } else { @@ -2000,6 +2020,7 @@ static void i40e_create_tx_ctx(struct i40e_ring *tx_ring, /* cpu_to_le32 and assign to struct fields */ context_desc->tunneling_params = cpu_to_le32(cd_tunneling); context_desc->l2tag2 = cpu_to_le16(cd_l2tag2); + context_desc->rsvd = cpu_to_le16(0); context_desc->type_cmd_tso_mss = cpu_to_le64(cd_type_cmd_tso_mss); } @@ -2013,9 +2034,15 @@ static void i40e_create_tx_ctx(struct i40e_ring *tx_ring, * @td_cmd: the command field in the descriptor * @td_offset: offset for checksum or crc **/ +#ifdef I40E_FCOE +void i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb, + struct i40e_tx_buffer *first, u32 tx_flags, + const u8 hdr_len, u32 td_cmd, u32 td_offset) +#else static void i40e_tx_map(struct i40e_ring *tx_ring, struct sk_buff *skb, struct i40e_tx_buffer *first, u32 tx_flags, const u8 hdr_len, u32 td_cmd, u32 td_offset) +#endif { unsigned int data_len = skb->data_len; unsigned int size = skb_headlen(skb); @@ -2192,7 +2219,11 @@ static inline int __i40e_maybe_stop_tx(struct i40e_ring *tx_ring, int size) * * Returns 0 if stop is not needed **/ +#ifdef I40E_FCOE +int i40e_maybe_stop_tx(struct i40e_ring *tx_ring, int size) +#else static int i40e_maybe_stop_tx(struct i40e_ring *tx_ring, int size) +#endif { if (likely(I40E_DESC_UNUSED(tx_ring) >= size)) return 0; @@ -2208,8 +2239,13 @@ static int i40e_maybe_stop_tx(struct i40e_ring *tx_ring, int size) * there is not enough descriptors available in this ring since we need at least * one descriptor. **/ +#ifdef I40E_FCOE +int i40e_xmit_descriptor_count(struct sk_buff *skb, + struct i40e_ring *tx_ring) +#else static int i40e_xmit_descriptor_count(struct sk_buff *skb, struct i40e_ring *tx_ring) +#endif { unsigned int f; int count = 0; @@ -2278,13 +2314,13 @@ static netdev_tx_t i40e_xmit_frame_ring(struct sk_buff *skb, else if (tso) tx_flags |= I40E_TX_FLAGS_TSO; - skb_tx_timestamp(skb); - tsyn = i40e_tsyn(tx_ring, skb, tx_flags, &cd_type_cmd_tso_mss); if (tsyn) tx_flags |= I40E_TX_FLAGS_TSYN; + skb_tx_timestamp(skb); + /* always enable CRC insertion offload */ td_cmd |= I40E_TX_DESC_CMD_ICRC; |