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path: root/drivers/net/myri10ge/myri10ge.c
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Diffstat (limited to 'drivers/net/myri10ge/myri10ge.c')
-rw-r--r--drivers/net/myri10ge/myri10ge.c109
1 files changed, 90 insertions, 19 deletions
diff --git a/drivers/net/myri10ge/myri10ge.c b/drivers/net/myri10ge/myri10ge.c
index e8afa101433..0f306ddb563 100644
--- a/drivers/net/myri10ge/myri10ge.c
+++ b/drivers/net/myri10ge/myri10ge.c
@@ -75,7 +75,7 @@
#include "myri10ge_mcp.h"
#include "myri10ge_mcp_gen_header.h"
-#define MYRI10GE_VERSION_STR "1.3.2-1.269"
+#define MYRI10GE_VERSION_STR "1.3.2-1.287"
MODULE_DESCRIPTION("Myricom 10G driver (10GbE)");
MODULE_AUTHOR("Maintainer: help@myri.com");
@@ -214,6 +214,8 @@ struct myri10ge_priv {
unsigned long serial_number;
int vendor_specific_offset;
int fw_multicast_support;
+ unsigned long features;
+ u32 max_tso6;
u32 read_dma;
u32 write_dma;
u32 read_write_dma;
@@ -311,6 +313,7 @@ MODULE_PARM_DESC(myri10ge_wcfifo, "Enable WC Fifo when WC is enabled\n");
#define myri10ge_pio_copy(to,from,size) __iowrite64_copy(to,from,size/8)
static void myri10ge_set_multicast_list(struct net_device *dev);
+static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev);
static inline void put_be32(__be32 val, __be32 __iomem * p)
{
@@ -612,6 +615,7 @@ static int myri10ge_load_firmware(struct myri10ge_priv *mgp)
__be32 buf[16];
u32 dma_low, dma_high, size;
int status, i;
+ struct myri10ge_cmd cmd;
size = 0;
status = myri10ge_load_hotplug_firmware(mgp, &size);
@@ -688,6 +692,14 @@ static int myri10ge_load_firmware(struct myri10ge_priv *mgp)
dev_info(&mgp->pdev->dev, "handoff confirmed\n");
myri10ge_dummy_rdma(mgp, 1);
+ /* probe for IPv6 TSO support */
+ mgp->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
+ status = myri10ge_send_cmd(mgp, MXGEFW_CMD_GET_MAX_TSO6_HDR_SIZE,
+ &cmd, 0);
+ if (status == 0) {
+ mgp->max_tso6 = cmd.data0;
+ mgp->features |= NETIF_F_TSO6;
+ }
return 0;
}
@@ -1047,7 +1059,8 @@ myri10ge_rx_done(struct myri10ge_priv *mgp, struct myri10ge_rx_buf *rx,
hlen = MYRI10GE_HLEN > len ? len : MYRI10GE_HLEN;
- /* allocate an skb to attach the page(s) to. */
+ /* allocate an skb to attach the page(s) to. This is done
+ * after trying LRO, so as to avoid skb allocation overheads */
skb = netdev_alloc_skb(dev, MYRI10GE_HLEN + 16);
if (unlikely(skb == NULL)) {
@@ -1138,7 +1151,7 @@ static inline int myri10ge_clean_rx_done(struct myri10ge_priv *mgp, int budget)
u16 length;
__wsum checksum;
- while (rx_done->entry[idx].length != 0 && work_done++ < budget) {
+ while (rx_done->entry[idx].length != 0 && work_done < budget) {
length = ntohs(rx_done->entry[idx].length);
rx_done->entry[idx].length = 0;
checksum = csum_unfold(rx_done->entry[idx].checksum);
@@ -1154,6 +1167,7 @@ static inline int myri10ge_clean_rx_done(struct myri10ge_priv *mgp, int budget)
rx_bytes += rx_ok * (unsigned long)length;
cnt++;
idx = cnt & (myri10ge_max_intr_slots - 1);
+ work_done++;
}
rx_done->idx = idx;
rx_done->cnt = cnt;
@@ -1217,15 +1231,15 @@ static inline void myri10ge_check_statblock(struct myri10ge_priv *mgp)
static int myri10ge_poll(struct napi_struct *napi, int budget)
{
- struct myri10ge_priv *mgp = container_of(napi, struct myri10ge_priv, napi);
+ struct myri10ge_priv *mgp =
+ container_of(napi, struct myri10ge_priv, napi);
struct net_device *netdev = mgp->dev;
- struct myri10ge_rx_done *rx_done = &mgp->rx_done;
int work_done;
/* process as many rx events as NAPI will allow */
work_done = myri10ge_clean_rx_done(mgp, budget);
- if (rx_done->entry[rx_done->idx].length == 0 || !netif_running(netdev)) {
+ if (work_done < budget || !netif_running(netdev)) {
netif_rx_complete(netdev, napi);
put_be32(htonl(3), mgp->irq_claim);
}
@@ -1382,6 +1396,18 @@ static int myri10ge_set_rx_csum(struct net_device *netdev, u32 csum_enabled)
return 0;
}
+static int myri10ge_set_tso(struct net_device *netdev, u32 tso_enabled)
+{
+ struct myri10ge_priv *mgp = netdev_priv(netdev);
+ unsigned long flags = mgp->features & (NETIF_F_TSO6 | NETIF_F_TSO);
+
+ if (tso_enabled)
+ netdev->features |= flags;
+ else
+ netdev->features &= ~flags;
+ return 0;
+}
+
static const char myri10ge_gstrings_stats[][ETH_GSTRING_LEN] = {
"rx_packets", "tx_packets", "rx_bytes", "tx_bytes", "rx_errors",
"tx_errors", "rx_dropped", "tx_dropped", "multicast", "collisions",
@@ -1506,7 +1532,7 @@ static const struct ethtool_ops myri10ge_ethtool_ops = {
.set_rx_csum = myri10ge_set_rx_csum,
.set_tx_csum = ethtool_op_set_tx_hw_csum,
.set_sg = ethtool_op_set_sg,
- .set_tso = ethtool_op_set_tso,
+ .set_tso = myri10ge_set_tso,
.get_link = ethtool_op_get_link,
.get_strings = myri10ge_get_strings,
.get_sset_count = myri10ge_get_sset_count,
@@ -2164,7 +2190,8 @@ again:
pseudo_hdr_offset = cksum_offset + skb->csum_offset;
/* If the headers are excessively large, then we must
* fall back to a software checksum */
- if (unlikely(cksum_offset > 255 || pseudo_hdr_offset > 127)) {
+ if (unlikely(!mss && (cksum_offset > 255 ||
+ pseudo_hdr_offset > 127))) {
if (skb_checksum_help(skb))
goto drop;
cksum_offset = 0;
@@ -2184,9 +2211,18 @@ again:
/* negative cum_len signifies to the
* send loop that we are still in the
* header portion of the TSO packet.
- * TSO header must be at most 134 bytes long */
+ * TSO header can be at most 1KB long */
cum_len = -(skb_transport_offset(skb) + tcp_hdrlen(skb));
+ /* for IPv6 TSO, the checksum offset stores the
+ * TCP header length, to save the firmware from
+ * the need to parse the headers */
+ if (skb_is_gso_v6(skb)) {
+ cksum_offset = tcp_hdrlen(skb);
+ /* Can only handle headers <= max_tso6 long */
+ if (unlikely(-cum_len > mgp->max_tso6))
+ return myri10ge_sw_tso(skb, dev);
+ }
/* for TSO, pseudo_hdr_offset holds mss.
* The firmware figures out where to put
* the checksum by parsing the header. */
@@ -2301,10 +2337,12 @@ again:
req++;
count++;
rdma_count++;
- if (unlikely(cksum_offset > seglen))
- cksum_offset -= seglen;
- else
- cksum_offset = 0;
+ if (cksum_offset != 0 && !(mss && skb_is_gso_v6(skb))) {
+ if (unlikely(cksum_offset > seglen))
+ cksum_offset -= seglen;
+ else
+ cksum_offset = 0;
+ }
}
if (frag_idx == frag_cnt)
break;
@@ -2387,6 +2425,41 @@ drop:
}
+static int myri10ge_sw_tso(struct sk_buff *skb, struct net_device *dev)
+{
+ struct sk_buff *segs, *curr;
+ struct myri10ge_priv *mgp = dev->priv;
+ int status;
+
+ segs = skb_gso_segment(skb, dev->features & ~NETIF_F_TSO6);
+ if (unlikely(IS_ERR(segs)))
+ goto drop;
+
+ while (segs) {
+ curr = segs;
+ segs = segs->next;
+ curr->next = NULL;
+ status = myri10ge_xmit(curr, dev);
+ if (status != 0) {
+ dev_kfree_skb_any(curr);
+ if (segs != NULL) {
+ curr = segs;
+ segs = segs->next;
+ curr->next = NULL;
+ dev_kfree_skb_any(segs);
+ }
+ goto drop;
+ }
+ }
+ dev_kfree_skb_any(skb);
+ return 0;
+
+drop:
+ dev_kfree_skb_any(skb);
+ mgp->stats.tx_dropped += 1;
+ return 0;
+}
+
static struct net_device_stats *myri10ge_get_stats(struct net_device *dev)
{
struct myri10ge_priv *mgp = netdev_priv(dev);
@@ -2706,7 +2779,6 @@ static void myri10ge_select_firmware(struct myri10ge_priv *mgp)
}
#ifdef CONFIG_PM
-
static int myri10ge_suspend(struct pci_dev *pdev, pm_message_t state)
{
struct myri10ge_priv *mgp;
@@ -2787,7 +2859,6 @@ abort_with_enabled:
return -EIO;
}
-
#endif /* CONFIG_PM */
static u32 myri10ge_read_reboot(struct myri10ge_priv *mgp)
@@ -2954,8 +3025,7 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
mgp = netdev_priv(netdev);
mgp->dev = netdev;
- netif_napi_add(netdev, &mgp->napi,
- myri10ge_poll, myri10ge_napi_weight);
+ netif_napi_add(netdev, &mgp->napi, myri10ge_poll, myri10ge_napi_weight);
mgp->pdev = pdev;
mgp->csum_flag = MXGEFW_FLAGS_CKSUM;
mgp->pause = myri10ge_flow_control;
@@ -2988,7 +3058,8 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (status != 0) {
dac_enabled = 0;
dev_err(&pdev->dev,
- "64-bit pci address mask was refused, trying 32-bit");
+ "64-bit pci address mask was refused, "
+ "trying 32-bit\n");
status = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
}
if (status != 0) {
@@ -3077,7 +3148,7 @@ static int myri10ge_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
netdev->change_mtu = myri10ge_change_mtu;
netdev->set_multicast_list = myri10ge_set_multicast_list;
netdev->set_mac_address = myri10ge_set_mac_address;
- netdev->features = NETIF_F_SG | NETIF_F_HW_CSUM | NETIF_F_TSO;
+ netdev->features = mgp->features;
if (dac_enabled)
netdev->features |= NETIF_F_HIGHDMA;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-08 15:35:52 +0000