xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net: use skb_sec_path helper in more places

Browse Source 
skb_sec_path gains 'const' qualifier to avoid
xt_policy.c: 'skb_sec_path' discards 'const' qualifier from pointer target type

same reasoning as previous conversions: Won't need to touch these
spots anymore when skb->sp is removed.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Westphal
2018-12-18 17:15:20 +01:00
committed by David S. Miller
parent 7af8f4ca31
commit 2294be0f11
13 changed files with 52 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
net/xfrm/xfrm_device.c
View File

@@ -32,6 +32,7 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
struct softnet_data *sd;
netdev_features_t esp_features = features;
struct xfrm_offload *xo = xfrm_offload(skb);
struct sec_path *sp;
if (!xo)
return skb;
@@ -39,7 +40,8 @@ struct sk_buff *validate_xmit_xfrm(struct sk_buff *skb, netdev_features_t featur
if (!(features & NETIF_F_HW_ESP))
esp_features = features & ~(NETIF_F_SG | NETIF_F_CSUM_MASK);
x = skb->sp->xvec[skb->sp->len - 1];
sp = skb_sec_path(skb);
x = sp->xvec[sp->len - 1];
if (xo->flags & XFRM_GRO || x->xso.flags & XFRM_OFFLOAD_INBOUND)
return skb;

16
net/xfrm/xfrm_input.c
View File

@@ -330,7 +330,9 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
daddr = (xfrm_address_t *)(skb_network_header(skb) +
XFRM_SPI_SKB_CB(skb)->daddroff);
do {
if (skb->sp->len == XFRM_MAX_DEPTH) {
sp = skb_sec_path(skb);
if (sp->len == XFRM_MAX_DEPTH) {
secpath_reset(skb);
XFRM_INC_STATS(net, LINUX_MIB_XFRMINBUFFERERROR);
goto drop;
@@ -346,7 +348,7 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type)
skb->mark = xfrm_smark_get(skb->mark, x);
skb->sp->xvec[skb->sp->len++] = x;
sp->xvec[sp->len++] = x;
lock:
spin_lock(&x->lock);
@@ -470,8 +472,9 @@ resume:
nf_reset(skb);
if (decaps) {
if (skb->sp)
skb->sp->olen = 0;
sp = skb_sec_path(skb);
if (sp)
sp->olen = 0;
skb_dst_drop(skb);
gro_cells_receive(&gro_cells, skb);
return 0;
@@ -482,8 +485,9 @@ resume:
err = x->inner_mode->afinfo->transport_finish(skb, xfrm_gro || async);
if (xfrm_gro) {
if (skb->sp)
skb->sp->olen = 0;
sp = skb_sec_path(skb);
if (sp)
sp->olen = 0;
skb_dst_drop(skb);
gro_cells_receive(&gro_cells, skb);
return err;

19
net/xfrm/xfrm_policy.c
View File

@@ -3200,11 +3200,12 @@ EXPORT_SYMBOL(xfrm_lookup_route);
static inline int
xfrm_secpath_reject(int idx, struct sk_buff *skb, const struct flowi *fl)
{
struct sec_path *sp = skb_sec_path(skb);
struct xfrm_state *x;
if (!skb->sp || idx < 0 || idx >= skb->sp->len)
if (!sp || idx < 0 || idx >= sp->len)
return 0;
x = skb->sp->xvec[idx];
x = sp->xvec[idx];
if (!x->type->reject)
return 0;
return x->type->reject(x, skb, fl);
@@ -3304,6 +3305,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
struct flowi fl;
int xerr_idx = -1;
const struct xfrm_if_cb *ifcb;
struct sec_path *sp;
struct xfrm_if *xi;
u32 if_id = 0;
@@ -3328,11 +3330,12 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
nf_nat_decode_session(skb, &fl, family);
/* First, check used SA against their selectors. */
if (skb->sp) {
sp = skb_sec_path(skb);
if (sp) {
int i;
for (i = skb->sp->len-1; i >= 0; i--) {
struct xfrm_state *x = skb->sp->xvec[i];
for (i = sp->len - 1; i >= 0; i--) {
struct xfrm_state *x = sp->xvec[i];
if (!xfrm_selector_match(&x->sel, &fl, family)) {
XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMISMATCH);
return 0;
@@ -3359,7 +3362,7 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
}
if (!pol) {
if (skb->sp && secpath_has_nontransport(skb->sp, 0, &xerr_idx)) {
if (sp && secpath_has_nontransport(sp, 0, &xerr_idx)) {
xfrm_secpath_reject(xerr_idx, skb, &fl);
XFRM_INC_STATS(net, LINUX_MIB_XFRMINNOPOLS);
return 0;
@@ -3388,7 +3391,6 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
#endif
if (pol->action == XFRM_POLICY_ALLOW) {
struct sec_path *sp;
static struct sec_path dummy;
struct xfrm_tmpl *tp[XFRM_MAX_DEPTH];
struct xfrm_tmpl *stp[XFRM_MAX_DEPTH];
@@ -3396,7 +3398,8 @@ int __xfrm_policy_check(struct sock *sk, int dir, struct sk_buff *skb,
int ti = 0;
int i, k;
if ((sp = skb->sp) == NULL)
sp = skb_sec_path(skb);
if (!sp)
sp = &dummy;
for (pi = 0; pi < npols; pi++) {