diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/sxg/sxg.c | 93 |
1 files changed, 58 insertions, 35 deletions
diff --git a/drivers/staging/sxg/sxg.c b/drivers/staging/sxg/sxg.c index 583fbb470e9..076b3f7d39e 100644 --- a/drivers/staging/sxg/sxg.c +++ b/drivers/staging/sxg/sxg.c @@ -2582,6 +2582,7 @@ static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, u64 phys_addr; unsigned long flags; unsigned long queue_id=0; + int offload_cksum = 0; SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "DumbSgl", pSgl, SxgSgl, 0, 0); @@ -2620,9 +2621,11 @@ static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, struct iphdr *ip; ip = ip_hdr(skb); - if (ip->protocol != IPPROTO_TCP || !tcp_hdr(skb)) + if (ip->protocol == IPPROTO_TCP) + offload_cksum = 1; + if (!offload_cksum || !tcp_hdr(skb)) queue_id = 0; - else if ((ip->protocol == IPPROTO_TCP)&&(DataLength >= sizeof( + else if (offload_cksum && (DataLength >= sizeof( struct tcphdr))){ queue_id = ((ntohs(tcp_hdr(skb)->dest) == ISCSI_PORT) ? (ntohs (tcp_hdr(skb)->source) & @@ -2631,10 +2634,11 @@ static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, SXG_LARGE_SEND_QUEUE_MASK)); } } else if (skb->protocol == htons(ETH_P_IPV6)) { - if (ipv6_hdr(skb)->nexthdr != IPPROTO_TCP || !tcp_hdr(skb)) + if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) + offload_cksum = 1; + if (!offload_cksum || !tcp_hdr(skb)) queue_id = 0; - else if ((ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) && (DataLength - >= sizeof(struct tcphdr)) ) { + else if (offload_cksum && (DataLength>=sizeof(struct tcphdr))){ queue_id = ((ntohs(tcp_hdr(skb)->dest) == ISCSI_PORT) ? (ntohs (tcp_hdr(skb)->source) & SXG_LARGE_SEND_QUEUE_MASK): @@ -2663,23 +2667,38 @@ static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, } SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "DumbCmd", XmtCmd, XmtRingInfo->Head, XmtRingInfo->Tail, 0); - /* Update stats */ - adapter->stats.tx_packets++; - adapter->stats.tx_bytes += DataLength; -#if XXXTODO /* Stats stuff */ - if (SXG_MULTICAST_PACKET(EtherHdr)) { - if (SXG_BROADCAST_PACKET(EtherHdr)) { - adapter->Stats.DumbXmtBcastPkts++; - adapter->Stats.DumbXmtBcastBytes += DataLength; + memset(XmtCmd, '\0', sizeof(*XmtCmd)); + XmtCmd->SgEntries = 1; + XmtCmd->Flags = 0; + if (skb->ip_summed == CHECKSUM_PARTIAL) { + /* + * We need to set the Checkum in IP header to 0. This is + * required by hardware. + */ + if (offload_cksum) { + ip_hdr(skb)->check = 0x0; + XmtCmd->CsumFlags.Flags |= SXG_SLOWCMD_CSUM_IP; + XmtCmd->CsumFlags.Flags |= SXG_SLOWCMD_CSUM_TCP; + /* + * Dont know if length will require a change in + * case of VLAN + */ + XmtCmd->CsumFlags.MacLen = ETH_HLEN; + XmtCmd->CsumFlags.IpHl = skb_network_header_len(skb) >> + SXG_NW_HDR_LEN_SHIFT; } else { - adapter->Stats.DumbXmtMcastPkts++; - adapter->Stats.DumbXmtMcastBytes += DataLength; + if (skb_checksum_help(skb)){ + printk(KERN_EMERG "Dropped UDP packet for" + " incorrect checksum calculation\n"); + if (XmtCmd) + SXG_ABORT_CMD(XmtRingInfo); + spin_unlock_irqrestore(&adapter->XmtZeroLock, + flags); + return STATUS_SUCCESS; + } } - } else { - adapter->Stats.DumbXmtUcastPkts++; - adapter->Stats.DumbXmtUcastBytes += DataLength; } -#endif + /* * Fill in the command * Copy out the first SGE to the command and adjust for offset @@ -2697,31 +2716,17 @@ static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, (SXG_INVALID_SGL(phys_addr,skb->data_len))) { spin_unlock_irqrestore(&adapter->XmtZeroLock, flags); + if (XmtCmd) + SXG_ABORT_CMD(XmtRingInfo); /* Silently drop this packet */ printk(KERN_EMERG"Dropped a packet for 64k boundary problem\n"); return STATUS_SUCCESS; } - memset(XmtCmd, '\0', sizeof(*XmtCmd)); XmtCmd->Buffer.FirstSgeAddress = phys_addr; XmtCmd->Buffer.FirstSgeLength = DataLength; XmtCmd->Buffer.SgeOffset = 0; XmtCmd->Buffer.TotalLength = DataLength; - XmtCmd->SgEntries = 1; - XmtCmd->Flags = 0; - if (skb->ip_summed == CHECKSUM_PARTIAL) { - /* - * We need to set the Checkum in IP header to 0. This is - * required by hardware. - */ - ip_hdr(skb)->check = 0x0; - XmtCmd->CsumFlags.Flags |= SXG_SLOWCMD_CSUM_IP; - XmtCmd->CsumFlags.Flags |= SXG_SLOWCMD_CSUM_TCP; - /* Dont know if length will require a change in case of VLAN */ - XmtCmd->CsumFlags.MacLen = ETH_HLEN; - XmtCmd->CsumFlags.IpHl = skb_network_header_len(skb) >> - SXG_NW_HDR_LEN_SHIFT; - } /* * Advance transmit cmd descripter by 1. * NOTE - See comments in SxgTcpOutput where we write @@ -2733,6 +2738,24 @@ static int sxg_dumb_sgl(struct sxg_x64_sgl *pSgl, ASSERT((queue_id & ~SXG_LARGE_SEND_QUEUE_MASK) == 0); WRITE_REG(adapter->UcodeRegs[0].XmtCmd, ((queue_id << 16) | 1), TRUE); adapter->Stats.XmtQLen++; /* Stats within lock */ + /* Update stats */ + adapter->stats.tx_packets++; + adapter->stats.tx_bytes += DataLength; +#if XXXTODO /* Stats stuff */ + if (SXG_MULTICAST_PACKET(EtherHdr)) { + if (SXG_BROADCAST_PACKET(EtherHdr)) { + adapter->Stats.DumbXmtBcastPkts++; + adapter->Stats.DumbXmtBcastBytes += DataLength; + } else { + adapter->Stats.DumbXmtMcastPkts++; + adapter->Stats.DumbXmtMcastBytes += DataLength; + } + } else { + adapter->Stats.DumbXmtUcastPkts++; + adapter->Stats.DumbXmtUcastBytes += DataLength; + } +#endif + spin_unlock_irqrestore(&adapter->XmtZeroLock, flags); SXG_TRACE(TRACE_SXG, SxgTraceBuffer, TRACE_NOISY, "XDumSgl2", XmtCmd, pSgl, SxgSgl, 0); |