lro: remove dead code
Remove leftover code that is not used anywhere in current tree. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
da131ddbff
commit
24245a1b05
|
@ -133,33 +133,10 @@ struct net_lro_mgr {
|
|||
void lro_receive_skb(struct net_lro_mgr *lro_mgr,
|
||||
struct sk_buff *skb,
|
||||
void *priv);
|
||||
|
||||
/*
|
||||
* Processes a fragment list
|
||||
*
|
||||
* This functions aggregate fragments and generate SKBs do pass
|
||||
* the packets to the stack.
|
||||
*
|
||||
* @lro_mgr: LRO manager to use
|
||||
* @frags: Fragment to be processed. Must contain entire header in first
|
||||
* element.
|
||||
* @len: Length of received data
|
||||
* @true_size: Actual size of memory the fragment is consuming
|
||||
* @priv: Private data that may be used by driver functions
|
||||
* (for example get_tcp_ip_hdr)
|
||||
*/
|
||||
|
||||
void lro_receive_frags(struct net_lro_mgr *lro_mgr,
|
||||
struct skb_frag_struct *frags,
|
||||
int len, int true_size, void *priv, __wsum sum);
|
||||
|
||||
/*
|
||||
* Forward all aggregated SKBs held by lro_mgr to network stack
|
||||
*/
|
||||
|
||||
void lro_flush_all(struct net_lro_mgr *lro_mgr);
|
||||
|
||||
void lro_flush_pkt(struct net_lro_mgr *lro_mgr,
|
||||
struct iphdr *iph, struct tcphdr *tcph);
|
||||
|
||||
#endif
|
||||
|
|
|
@ -230,29 +230,6 @@ static void lro_add_packet(struct net_lro_desc *lro_desc, struct sk_buff *skb,
|
|||
lro_desc->last_skb = skb;
|
||||
}
|
||||
|
||||
static void lro_add_frags(struct net_lro_desc *lro_desc,
|
||||
int len, int hlen, int truesize,
|
||||
struct skb_frag_struct *skb_frags,
|
||||
struct iphdr *iph, struct tcphdr *tcph)
|
||||
{
|
||||
struct sk_buff *skb = lro_desc->parent;
|
||||
int tcp_data_len = TCP_PAYLOAD_LENGTH(iph, tcph);
|
||||
|
||||
lro_add_common(lro_desc, iph, tcph, tcp_data_len);
|
||||
|
||||
skb->truesize += truesize;
|
||||
|
||||
skb_frags[0].page_offset += hlen;
|
||||
skb_frag_size_sub(&skb_frags[0], hlen);
|
||||
|
||||
while (tcp_data_len > 0) {
|
||||
*(lro_desc->next_frag) = *skb_frags;
|
||||
tcp_data_len -= skb_frag_size(skb_frags);
|
||||
lro_desc->next_frag++;
|
||||
skb_frags++;
|
||||
skb_shinfo(skb)->nr_frags++;
|
||||
}
|
||||
}
|
||||
|
||||
static int lro_check_tcp_conn(struct net_lro_desc *lro_desc,
|
||||
struct iphdr *iph,
|
||||
|
@ -371,128 +348,6 @@ out:
|
|||
return 1;
|
||||
}
|
||||
|
||||
|
||||
static struct sk_buff *lro_gen_skb(struct net_lro_mgr *lro_mgr,
|
||||
struct skb_frag_struct *frags,
|
||||
int len, int true_size,
|
||||
void *mac_hdr,
|
||||
int hlen, __wsum sum,
|
||||
u32 ip_summed)
|
||||
{
|
||||
struct sk_buff *skb;
|
||||
struct skb_frag_struct *skb_frags;
|
||||
int data_len = len;
|
||||
int hdr_len = min(len, hlen);
|
||||
|
||||
skb = netdev_alloc_skb(lro_mgr->dev, hlen + lro_mgr->frag_align_pad);
|
||||
if (!skb)
|
||||
return NULL;
|
||||
|
||||
skb_reserve(skb, lro_mgr->frag_align_pad);
|
||||
skb->len = len;
|
||||
skb->data_len = len - hdr_len;
|
||||
skb->truesize += true_size;
|
||||
skb->tail += hdr_len;
|
||||
|
||||
memcpy(skb->data, mac_hdr, hdr_len);
|
||||
|
||||
skb_frags = skb_shinfo(skb)->frags;
|
||||
while (data_len > 0) {
|
||||
*skb_frags = *frags;
|
||||
data_len -= skb_frag_size(frags);
|
||||
skb_frags++;
|
||||
frags++;
|
||||
skb_shinfo(skb)->nr_frags++;
|
||||
}
|
||||
|
||||
skb_shinfo(skb)->frags[0].page_offset += hdr_len;
|
||||
skb_frag_size_sub(&skb_shinfo(skb)->frags[0], hdr_len);
|
||||
|
||||
skb->ip_summed = ip_summed;
|
||||
skb->csum = sum;
|
||||
skb->protocol = eth_type_trans(skb, lro_mgr->dev);
|
||||
return skb;
|
||||
}
|
||||
|
||||
static struct sk_buff *__lro_proc_segment(struct net_lro_mgr *lro_mgr,
|
||||
struct skb_frag_struct *frags,
|
||||
int len, int true_size,
|
||||
void *priv, __wsum sum)
|
||||
{
|
||||
struct net_lro_desc *lro_desc;
|
||||
struct iphdr *iph;
|
||||
struct tcphdr *tcph;
|
||||
struct sk_buff *skb;
|
||||
u64 flags;
|
||||
void *mac_hdr;
|
||||
int mac_hdr_len;
|
||||
int hdr_len = LRO_MAX_PG_HLEN;
|
||||
int vlan_hdr_len = 0;
|
||||
|
||||
if (!lro_mgr->get_frag_header ||
|
||||
lro_mgr->get_frag_header(frags, (void *)&mac_hdr, (void *)&iph,
|
||||
(void *)&tcph, &flags, priv)) {
|
||||
mac_hdr = skb_frag_address(frags);
|
||||
goto out1;
|
||||
}
|
||||
|
||||
if (!(flags & LRO_IPV4) || !(flags & LRO_TCP))
|
||||
goto out1;
|
||||
|
||||
hdr_len = (int)((void *)(tcph) + TCP_HDR_LEN(tcph) - mac_hdr);
|
||||
mac_hdr_len = (int)((void *)(iph) - mac_hdr);
|
||||
|
||||
lro_desc = lro_get_desc(lro_mgr, lro_mgr->lro_arr, iph, tcph);
|
||||
if (!lro_desc)
|
||||
goto out1;
|
||||
|
||||
if (!lro_desc->active) { /* start new lro session */
|
||||
if (lro_tcp_ip_check(iph, tcph, len - mac_hdr_len, NULL))
|
||||
goto out1;
|
||||
|
||||
skb = lro_gen_skb(lro_mgr, frags, len, true_size, mac_hdr,
|
||||
hdr_len, 0, lro_mgr->ip_summed_aggr);
|
||||
if (!skb)
|
||||
goto out;
|
||||
|
||||
if ((skb->protocol == htons(ETH_P_8021Q)) &&
|
||||
!(lro_mgr->features & LRO_F_EXTRACT_VLAN_ID))
|
||||
vlan_hdr_len = VLAN_HLEN;
|
||||
|
||||
iph = (void *)(skb->data + vlan_hdr_len);
|
||||
tcph = (void *)((u8 *)skb->data + vlan_hdr_len
|
||||
+ IP_HDR_LEN(iph));
|
||||
|
||||
lro_init_desc(lro_desc, skb, iph, tcph);
|
||||
LRO_INC_STATS(lro_mgr, aggregated);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (lro_desc->tcp_next_seq != ntohl(tcph->seq))
|
||||
goto out2;
|
||||
|
||||
if (lro_tcp_ip_check(iph, tcph, len - mac_hdr_len, lro_desc))
|
||||
goto out2;
|
||||
|
||||
lro_add_frags(lro_desc, len, hdr_len, true_size, frags, iph, tcph);
|
||||
LRO_INC_STATS(lro_mgr, aggregated);
|
||||
|
||||
if ((skb_shinfo(lro_desc->parent)->nr_frags >= lro_mgr->max_aggr) ||
|
||||
lro_desc->parent->len > (0xFFFF - lro_mgr->dev->mtu))
|
||||
lro_flush(lro_mgr, lro_desc);
|
||||
|
||||
return NULL;
|
||||
|
||||
out2: /* send aggregated packets to the stack */
|
||||
lro_flush(lro_mgr, lro_desc);
|
||||
|
||||
out1: /* Original packet has to be posted to the stack */
|
||||
skb = lro_gen_skb(lro_mgr, frags, len, true_size, mac_hdr,
|
||||
hdr_len, sum, lro_mgr->ip_summed);
|
||||
out:
|
||||
return skb;
|
||||
}
|
||||
|
||||
void lro_receive_skb(struct net_lro_mgr *lro_mgr,
|
||||
struct sk_buff *skb,
|
||||
void *priv)
|
||||
|
@ -506,23 +361,6 @@ void lro_receive_skb(struct net_lro_mgr *lro_mgr,
|
|||
}
|
||||
EXPORT_SYMBOL(lro_receive_skb);
|
||||
|
||||
void lro_receive_frags(struct net_lro_mgr *lro_mgr,
|
||||
struct skb_frag_struct *frags,
|
||||
int len, int true_size, void *priv, __wsum sum)
|
||||
{
|
||||
struct sk_buff *skb;
|
||||
|
||||
skb = __lro_proc_segment(lro_mgr, frags, len, true_size, priv, sum);
|
||||
if (!skb)
|
||||
return;
|
||||
|
||||
if (lro_mgr->features & LRO_F_NAPI)
|
||||
netif_receive_skb(skb);
|
||||
else
|
||||
netif_rx(skb);
|
||||
}
|
||||
EXPORT_SYMBOL(lro_receive_frags);
|
||||
|
||||
void lro_flush_all(struct net_lro_mgr *lro_mgr)
|
||||
{
|
||||
int i;
|
||||
|
@ -534,14 +372,3 @@ void lro_flush_all(struct net_lro_mgr *lro_mgr)
|
|||
}
|
||||
}
|
||||
EXPORT_SYMBOL(lro_flush_all);
|
||||
|
||||
void lro_flush_pkt(struct net_lro_mgr *lro_mgr,
|
||||
struct iphdr *iph, struct tcphdr *tcph)
|
||||
{
|
||||
struct net_lro_desc *lro_desc;
|
||||
|
||||
lro_desc = lro_get_desc(lro_mgr, lro_mgr->lro_arr, iph, tcph);
|
||||
if (lro_desc->active)
|
||||
lro_flush(lro_mgr, lro_desc);
|
||||
}
|
||||
EXPORT_SYMBOL(lro_flush_pkt);
|
||||
|
|
Loading…
Reference in New Issue