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-rw-r--r--net/ipv6/ila/ila.h79
-rw-r--r--net/ipv6/ila/ila_common.c81
-rw-r--r--net/ipv6/ila/ila_lwt.c54
-rw-r--r--net/ipv6/ila/ila_xlat.c167
4 files changed, 261 insertions, 120 deletions
diff --git a/net/ipv6/ila/ila.h b/net/ipv6/ila/ila.h
index 28542cb2b387..d08fd2d48a78 100644
--- a/net/ipv6/ila/ila.h
+++ b/net/ipv6/ila/ila.h
@@ -23,10 +23,76 @@
#include <net/protocol.h>
#include <uapi/linux/ila.h>
+struct ila_locator {
+ union {
+ __u8 v8[8];
+ __be16 v16[4];
+ __be32 v32[2];
+ __be64 v64;
+ };
+};
+
+struct ila_identifier {
+ union {
+ struct {
+#if defined(__LITTLE_ENDIAN_BITFIELD)
+ u8 __space:4;
+ u8 csum_neutral:1;
+ u8 type:3;
+#elif defined(__BIG_ENDIAN_BITFIELD)
+ u8 type:3;
+ u8 csum_neutral:1;
+ u8 __space:4;
+#else
+#error "Adjust your <asm/byteorder.h> defines"
+#endif
+ u8 __space2[7];
+ };
+ __u8 v8[8];
+ __be16 v16[4];
+ __be32 v32[2];
+ __be64 v64;
+ };
+};
+
+enum {
+ ILA_ATYPE_IID = 0,
+ ILA_ATYPE_LUID,
+ ILA_ATYPE_VIRT_V4,
+ ILA_ATYPE_VIRT_UNI_V6,
+ ILA_ATYPE_VIRT_MULTI_V6,
+ ILA_ATYPE_RSVD_1,
+ ILA_ATYPE_RSVD_2,
+ ILA_ATYPE_RSVD_3,
+};
+
+#define CSUM_NEUTRAL_FLAG htonl(0x10000000)
+
+struct ila_addr {
+ union {
+ struct in6_addr addr;
+ struct {
+ struct ila_locator loc;
+ struct ila_identifier ident;
+ };
+ };
+};
+
+static inline struct ila_addr *ila_a2i(struct in6_addr *addr)
+{
+ return (struct ila_addr *)addr;
+}
+
+static inline bool ila_addr_is_ila(struct ila_addr *iaddr)
+{
+ return (iaddr->ident.type != ILA_ATYPE_IID);
+}
+
struct ila_params {
- __be64 locator;
- __be64 locator_match;
+ struct ila_locator locator;
+ struct ila_locator locator_match;
__wsum csum_diff;
+ u8 csum_mode;
};
static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to)
@@ -38,7 +104,14 @@ static inline __wsum compute_csum_diff8(const __be32 *from, const __be32 *to)
return csum_partial(diff, sizeof(diff), 0);
}
-void update_ipv6_locator(struct sk_buff *skb, struct ila_params *p);
+static inline bool ila_csum_neutral_set(struct ila_identifier ident)
+{
+ return !!(ident.csum_neutral);
+}
+
+void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p);
+
+void ila_init_saved_csum(struct ila_params *p);
int ila_lwt_init(void);
void ila_lwt_fini(void);
diff --git a/net/ipv6/ila/ila_common.c b/net/ipv6/ila/ila_common.c
index 30613050e4ca..0e94042d1289 100644
--- a/net/ipv6/ila/ila_common.c
+++ b/net/ipv6/ila/ila_common.c
@@ -15,20 +15,52 @@
static __wsum get_csum_diff(struct ipv6hdr *ip6h, struct ila_params *p)
{
- if (*(__be64 *)&ip6h->daddr == p->locator_match)
+ struct ila_addr *iaddr = ila_a2i(&ip6h->daddr);
+
+ if (p->locator_match.v64)
return p->csum_diff;
else
- return compute_csum_diff8((__be32 *)&ip6h->daddr,
+ return compute_csum_diff8((__be32 *)&iaddr->loc,
+ (__be32 *)&p->locator);
+}
+
+static void ila_csum_do_neutral(struct ila_addr *iaddr,
+ struct ila_params *p)
+{
+ __sum16 *adjust = (__force __sum16 *)&iaddr->ident.v16[3];
+ __wsum diff, fval;
+
+ /* Check if checksum adjust value has been cached */
+ if (p->locator_match.v64) {
+ diff = p->csum_diff;
+ } else {
+ diff = compute_csum_diff8((__be32 *)iaddr,
(__be32 *)&p->locator);
+ }
+
+ fval = (__force __wsum)(ila_csum_neutral_set(iaddr->ident) ?
+ ~CSUM_NEUTRAL_FLAG : CSUM_NEUTRAL_FLAG);
+
+ diff = csum_add(diff, fval);
+
+ *adjust = ~csum_fold(csum_add(diff, csum_unfold(*adjust)));
+
+ /* Flip the csum-neutral bit. Either we are doing a SIR->ILA
+ * translation with ILA_CSUM_NEUTRAL_MAP as the csum_method
+ * and the C-bit is not set, or we are doing an ILA-SIR
+ * tranlsation and the C-bit is set.
+ */
+ iaddr->ident.csum_neutral ^= 1;
}
-void update_ipv6_locator(struct sk_buff *skb, struct ila_params *p)
+static void ila_csum_adjust_transport(struct sk_buff *skb,
+ struct ila_params *p)
{
__wsum diff;
struct ipv6hdr *ip6h = ipv6_hdr(skb);
+ struct ila_addr *iaddr = ila_a2i(&ip6h->daddr);
size_t nhoff = sizeof(struct ipv6hdr);
- /* First update checksum */
switch (ip6h->nexthdr) {
case NEXTHDR_TCP:
if (likely(pskb_may_pull(skb, nhoff + sizeof(struct tcphdr)))) {
@@ -68,7 +100,46 @@ void update_ipv6_locator(struct sk_buff *skb, struct ila_params *p)
}
/* Now change destination address */
- *(__be64 *)&ip6h->daddr = p->locator;
+ iaddr->loc = p->locator;
+}
+
+void ila_update_ipv6_locator(struct sk_buff *skb, struct ila_params *p)
+{
+ struct ipv6hdr *ip6h = ipv6_hdr(skb);
+ struct ila_addr *iaddr = ila_a2i(&ip6h->daddr);
+
+ /* First deal with the transport checksum */
+ if (ila_csum_neutral_set(iaddr->ident)) {
+ /* C-bit is set in the locator indicating that this
+ * is a locator being translated to a SIR address.
+ * Perform (receiver) checksum-neutral translation.
+ */
+ ila_csum_do_neutral(iaddr, p);
+ } else {
+ switch (p->csum_mode) {
+ case ILA_CSUM_ADJUST_TRANSPORT:
+ ila_csum_adjust_transport(skb, p);
+ break;
+ case ILA_CSUM_NEUTRAL_MAP:
+ ila_csum_do_neutral(iaddr, p);
+ break;
+ case ILA_CSUM_NO_ACTION:
+ break;
+ }
+ }
+
+ /* Now change destination address */
+ iaddr->loc = p->locator;
+}
+
+void ila_init_saved_csum(struct ila_params *p)
+{
+ if (!p->locator_match.v64)
+ return;
+
+ p->csum_diff = compute_csum_diff8(
+ (__be32 *)&p->locator_match,
+ (__be32 *)&p->locator);
}
static int __init ila_init(void)
diff --git a/net/ipv6/ila/ila_lwt.c b/net/ipv6/ila/ila_lwt.c
index 41f18de5dcc2..1dfb64166d7d 100644
--- a/net/ipv6/ila/ila_lwt.c
+++ b/net/ipv6/ila/ila_lwt.c
@@ -26,7 +26,7 @@ static int ila_output(struct net *net, struct sock *sk, struct sk_buff *skb)
if (skb->protocol != htons(ETH_P_IPV6))
goto drop;
- update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate));
+ ila_update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate));
return dst->lwtstate->orig_output(net, sk, skb);
@@ -42,7 +42,7 @@ static int ila_input(struct sk_buff *skb)
if (skb->protocol != htons(ETH_P_IPV6))
goto drop;
- update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate));
+ ila_update_ipv6_locator(skb, ila_params_lwtunnel(dst->lwtstate));
return dst->lwtstate->orig_input(skb);
@@ -53,6 +53,7 @@ drop:
static struct nla_policy ila_nl_policy[ILA_ATTR_MAX + 1] = {
[ILA_ATTR_LOCATOR] = { .type = NLA_U64, },
+ [ILA_ATTR_CSUM_MODE] = { .type = NLA_U8, },
};
static int ila_build_state(struct net_device *dev, struct nlattr *nla,
@@ -64,11 +65,28 @@ static int ila_build_state(struct net_device *dev, struct nlattr *nla,
size_t encap_len = sizeof(*p);
struct lwtunnel_state *newts;
const struct fib6_config *cfg6 = cfg;
+ struct ila_addr *iaddr;
int ret;
if (family != AF_INET6)
return -EINVAL;
+ if (cfg6->fc_dst_len < sizeof(struct ila_locator) + 1) {
+ /* Need to have full locator and at least type field
+ * included in destination
+ */
+ return -EINVAL;
+ }
+
+ iaddr = (struct ila_addr *)&cfg6->fc_dst;
+
+ if (!ila_addr_is_ila(iaddr) || ila_csum_neutral_set(iaddr->ident)) {
+ /* Don't allow translation for a non-ILA address or checksum
+ * neutral flag to be set.
+ */
+ return -EINVAL;
+ }
+
ret = nla_parse_nested(tb, ILA_ATTR_MAX, nla,
ila_nl_policy);
if (ret < 0)
@@ -84,16 +102,19 @@ static int ila_build_state(struct net_device *dev, struct nlattr *nla,
newts->len = encap_len;
p = ila_params_lwtunnel(newts);
- p->locator = (__force __be64)nla_get_u64(tb[ILA_ATTR_LOCATOR]);
+ p->locator.v64 = (__force __be64)nla_get_u64(tb[ILA_ATTR_LOCATOR]);
- if (cfg6->fc_dst_len > sizeof(__be64)) {
- /* Precompute checksum difference for translation since we
- * know both the old locator and the new one.
- */
- p->locator_match = *(__be64 *)&cfg6->fc_dst;
- p->csum_diff = compute_csum_diff8(
- (__be32 *)&p->locator_match, (__be32 *)&p->locator);
- }
+ /* Precompute checksum difference for translation since we
+ * know both the old locator and the new one.
+ */
+ p->locator_match = iaddr->loc;
+ p->csum_diff = compute_csum_diff8(
+ (__be32 *)&p->locator_match, (__be32 *)&p->locator);
+
+ if (tb[ILA_ATTR_CSUM_MODE])
+ p->csum_mode = nla_get_u8(tb[ILA_ATTR_CSUM_MODE]);
+
+ ila_init_saved_csum(p);
newts->type = LWTUNNEL_ENCAP_ILA;
newts->flags |= LWTUNNEL_STATE_OUTPUT_REDIRECT |
@@ -109,7 +130,10 @@ static int ila_fill_encap_info(struct sk_buff *skb,
{
struct ila_params *p = ila_params_lwtunnel(lwtstate);
- if (nla_put_u64(skb, ILA_ATTR_LOCATOR, (__force u64)p->locator))
+ if (nla_put_u64_64bit(skb, ILA_ATTR_LOCATOR, (__force u64)p->locator.v64,
+ ILA_ATTR_PAD))
+ goto nla_put_failure;
+ if (nla_put_u8(skb, ILA_ATTR_CSUM_MODE, (__force u8)p->csum_mode))
goto nla_put_failure;
return 0;
@@ -120,7 +144,9 @@ nla_put_failure:
static int ila_encap_nlsize(struct lwtunnel_state *lwtstate)
{
- return nla_total_size(sizeof(u64)); /* ILA_ATTR_LOCATOR */
+ return nla_total_size_64bit(sizeof(u64)) + /* ILA_ATTR_LOCATOR */
+ nla_total_size(sizeof(u8)) + /* ILA_ATTR_CSUM_MODE */
+ 0;
}
static int ila_encap_cmp(struct lwtunnel_state *a, struct lwtunnel_state *b)
@@ -128,7 +154,7 @@ static int ila_encap_cmp(struct lwtunnel_state *a, struct lwtunnel_state *b)
struct ila_params *a_p = ila_params_lwtunnel(a);
struct ila_params *b_p = ila_params_lwtunnel(b);
- return (a_p->locator != b_p->locator);
+ return (a_p->locator.v64 != b_p->locator.v64);
}
static const struct lwtunnel_encap_ops ila_encap_ops = {
diff --git a/net/ipv6/ila/ila_xlat.c b/net/ipv6/ila/ila_xlat.c
index 295ca29a23c3..a90e57229c6c 100644
--- a/net/ipv6/ila/ila_xlat.c
+++ b/net/ipv6/ila/ila_xlat.c
@@ -11,13 +11,11 @@
struct ila_xlat_params {
struct ila_params ip;
- __be64 identifier;
int ifindex;
- unsigned int dir;
};
struct ila_map {
- struct ila_xlat_params p;
+ struct ila_xlat_params xp;
struct rhash_head node;
struct ila_map __rcu *next;
struct rcu_head rcu;
@@ -66,31 +64,29 @@ static __always_inline void __ila_hash_secret_init(void)
net_get_random_once(&hashrnd, sizeof(hashrnd));
}
-static inline u32 ila_identifier_hash(__be64 identifier)
+static inline u32 ila_locator_hash(struct ila_locator loc)
{
- u32 *v = (u32 *)&identifier;
+ u32 *v = (u32 *)loc.v32;
return jhash_2words(v[0], v[1], hashrnd);
}
-static inline spinlock_t *ila_get_lock(struct ila_net *ilan, __be64 identifier)
+static inline spinlock_t *ila_get_lock(struct ila_net *ilan,
+ struct ila_locator loc)
{
- return &ilan->locks[ila_identifier_hash(identifier) & ilan->locks_mask];
+ return &ilan->locks[ila_locator_hash(loc) & ilan->locks_mask];
}
-static inline int ila_cmp_wildcards(struct ila_map *ila, __be64 loc,
- int ifindex, unsigned int dir)
+static inline int ila_cmp_wildcards(struct ila_map *ila,
+ struct ila_addr *iaddr, int ifindex)
{
- return (ila->p.ip.locator_match && ila->p.ip.locator_match != loc) ||
- (ila->p.ifindex && ila->p.ifindex != ifindex) ||
- !(ila->p.dir & dir);
+ return (ila->xp.ifindex && ila->xp.ifindex != ifindex);
}
-static inline int ila_cmp_params(struct ila_map *ila, struct ila_xlat_params *p)
+static inline int ila_cmp_params(struct ila_map *ila,
+ struct ila_xlat_params *xp)
{
- return (ila->p.ip.locator_match != p->ip.locator_match) ||
- (ila->p.ifindex != p->ifindex) ||
- (ila->p.dir != p->dir);
+ return (ila->xp.ifindex != xp->ifindex);
}
static int ila_cmpfn(struct rhashtable_compare_arg *arg,
@@ -98,17 +94,14 @@ static int ila_cmpfn(struct rhashtable_compare_arg *arg,
{
const struct ila_map *ila = obj;
- return (ila->p.identifier != *(__be64 *)arg->key);
+ return (ila->xp.ip.locator_match.v64 != *(__be64 *)arg->key);
}
static inline int ila_order(struct ila_map *ila)
{
int score = 0;
- if (ila->p.ip.locator_match)
- score += 1 << 0;
-
- if (ila->p.ifindex)
+ if (ila->xp.ifindex)
score += 1 << 1;
return score;
@@ -117,7 +110,7 @@ static inline int ila_order(struct ila_map *ila)
static const struct rhashtable_params rht_params = {
.nelem_hint = 1024,
.head_offset = offsetof(struct ila_map, node),
- .key_offset = offsetof(struct ila_map, p.identifier),
+ .key_offset = offsetof(struct ila_map, xp.ip.locator_match),
.key_len = sizeof(u64), /* identifier */
.max_size = 1048576,
.min_size = 256,
@@ -136,50 +129,45 @@ static struct genl_family ila_nl_family = {
};
static struct nla_policy ila_nl_policy[ILA_ATTR_MAX + 1] = {
- [ILA_ATTR_IDENTIFIER] = { .type = NLA_U64, },
[ILA_ATTR_LOCATOR] = { .type = NLA_U64, },
[ILA_ATTR_LOCATOR_MATCH] = { .type = NLA_U64, },
[ILA_ATTR_IFINDEX] = { .type = NLA_U32, },
- [ILA_ATTR_DIR] = { .type = NLA_U32, },
+ [ILA_ATTR_CSUM_MODE] = { .type = NLA_U8, },
};
static int parse_nl_config(struct genl_info *info,
- struct ila_xlat_params *p)
+ struct ila_xlat_params *xp)
{
- memset(p, 0, sizeof(*p));
-
- if (info->attrs[ILA_ATTR_IDENTIFIER])
- p->identifier = (__force __be64)nla_get_u64(
- info->attrs[ILA_ATTR_IDENTIFIER]);
+ memset(xp, 0, sizeof(*xp));
if (info->attrs[ILA_ATTR_LOCATOR])
- p->ip.locator = (__force __be64)nla_get_u64(
+ xp->ip.locator.v64 = (__force __be64)nla_get_u64(
info->attrs[ILA_ATTR_LOCATOR]);
if (info->attrs[ILA_ATTR_LOCATOR_MATCH])
- p->ip.locator_match = (__force __be64)nla_get_u64(
+ xp->ip.locator_match.v64 = (__force __be64)nla_get_u64(
info->attrs[ILA_ATTR_LOCATOR_MATCH]);
- if (info->attrs[ILA_ATTR_IFINDEX])
- p->ifindex = nla_get_s32(info->attrs[ILA_ATTR_IFINDEX]);
+ if (info->attrs[ILA_ATTR_CSUM_MODE])
+ xp->ip.csum_mode = nla_get_u8(info->attrs[ILA_ATTR_CSUM_MODE]);
- if (info->attrs[ILA_ATTR_DIR])
- p->dir = nla_get_u32(info->attrs[ILA_ATTR_DIR]);
+ if (info->attrs[ILA_ATTR_IFINDEX])
+ xp->ifindex = nla_get_s32(info->attrs[ILA_ATTR_IFINDEX]);
return 0;
}
/* Must be called with rcu readlock */
-static inline struct ila_map *ila_lookup_wildcards(__be64 id, __be64 loc,
+static inline struct ila_map *ila_lookup_wildcards(struct ila_addr *iaddr,
int ifindex,
- unsigned int dir,
struct ila_net *ilan)
{
struct ila_map *ila;
- ila = rhashtable_lookup_fast(&ilan->rhash_table, &id, rht_params);
+ ila = rhashtable_lookup_fast(&ilan->rhash_table, &iaddr->loc,
+ rht_params);
while (ila) {
- if (!ila_cmp_wildcards(ila, loc, ifindex, dir))
+ if (!ila_cmp_wildcards(ila, iaddr, ifindex))
return ila;
ila = rcu_access_pointer(ila->next);
}
@@ -188,15 +176,16 @@ static inline struct ila_map *ila_lookup_wildcards(__be64 id, __be64 loc,
}
/* Must be called with rcu readlock */
-static inline struct ila_map *ila_lookup_by_params(struct ila_xlat_params *p,
+static inline struct ila_map *ila_lookup_by_params(struct ila_xlat_params *xp,
struct ila_net *ilan)
{
struct ila_map *ila;
- ila = rhashtable_lookup_fast(&ilan->rhash_table, &p->identifier,
+ ila = rhashtable_lookup_fast(&ilan->rhash_table,
+ &xp->ip.locator_match,
rht_params);
while (ila) {
- if (!ila_cmp_params(ila, p))
+ if (!ila_cmp_params(ila, xp))
return ila;
ila = rcu_access_pointer(ila->next);
}
@@ -221,14 +210,14 @@ static void ila_free_cb(void *ptr, void *arg)
}
}
-static int ila_xlat_addr(struct sk_buff *skb, int dir);
+static int ila_xlat_addr(struct sk_buff *skb);
static unsigned int
ila_nf_input(void *priv,
struct sk_buff *skb,
const struct nf_hook_state *state)
{
- ila_xlat_addr(skb, ILA_DIR_IN);
+ ila_xlat_addr(skb);
return NF_ACCEPT;
}
@@ -241,11 +230,11 @@ static struct nf_hook_ops ila_nf_hook_ops[] __read_mostly = {
},
};
-static int ila_add_mapping(struct net *net, struct ila_xlat_params *p)
+static int ila_add_mapping(struct net *net, struct ila_xlat_params *xp)
{
struct ila_net *ilan = net_generic(net, ila_net_id);
struct ila_map *ila, *head;
- spinlock_t *lock = ila_get_lock(ilan, p->identifier);
+ spinlock_t *lock = ila_get_lock(ilan, xp->ip.locator_match);
int err = 0, order;
if (!ilan->hooks_registered) {
@@ -264,22 +253,16 @@ static int ila_add_mapping(struct net *net, struct ila_xlat_params *p)
if (!ila)
return -ENOMEM;
- ila->p = *p;
+ ila_init_saved_csum(&xp->ip);
- if (p->ip.locator_match) {
- /* Precompute checksum difference for translation since we
- * know both the old identifier and the new one.
- */
- ila->p.ip.csum_diff = compute_csum_diff8(
- (__be32 *)&p->ip.locator_match,
- (__be32 *)&p->ip.locator);
- }
+ ila->xp = *xp;
order = ila_order(ila);
spin_lock(lock);
- head = rhashtable_lookup_fast(&ilan->rhash_table, &p->identifier,
+ head = rhashtable_lookup_fast(&ilan->rhash_table,
+ &xp->ip.locator_match,
rht_params);
if (!head) {
/* New entry for the rhash_table */
@@ -289,7 +272,7 @@ static int ila_add_mapping(struct net *net, struct ila_xlat_params *p)
struct ila_map *tila = head, *prev = NULL;
do {
- if (!ila_cmp_params(tila, p)) {
+ if (!ila_cmp_params(tila, xp)) {
err = -EEXIST;
goto out;
}
@@ -326,23 +309,23 @@ out:
return err;
}
-static int ila_del_mapping(struct net *net, struct ila_xlat_params *p)
+static int ila_del_mapping(struct net *net, struct ila_xlat_params *xp)
{
struct ila_net *ilan = net_generic(net, ila_net_id);
struct ila_map *ila, *head, *prev;
- spinlock_t *lock = ila_get_lock(ilan, p->identifier);
+ spinlock_t *lock = ila_get_lock(ilan, xp->ip.locator_match);
int err = -ENOENT;
spin_lock(lock);
head = rhashtable_lookup_fast(&ilan->rhash_table,
- &p->identifier, rht_params);
+ &xp->ip.locator_match, rht_params);
ila = head;
prev = NULL;
while (ila) {
- if (ila_cmp_params(ila, p)) {
+ if (ila_cmp_params(ila, xp)) {
prev = ila;
ila = rcu_dereference_protected(ila->next,
lockdep_is_held(lock));
@@ -404,28 +387,28 @@ static int ila_nl_cmd_add_mapping(struct sk_buff *skb, struct genl_info *info)
static int ila_nl_cmd_del_mapping(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = genl_info_net(info);
- struct ila_xlat_params p;
+ struct ila_xlat_params xp;
int err;
- err = parse_nl_config(info, &p);
+ err = parse_nl_config(info, &xp);
if (err)
return err;
- ila_del_mapping(net, &p);
+ ila_del_mapping(net, &xp);
return 0;
}
static int ila_fill_info(struct ila_map *ila, struct sk_buff *msg)
{
- if (nla_put_u64(msg, ILA_ATTR_IDENTIFIER,
- (__force u64)ila->p.identifier) ||
- nla_put_u64(msg, ILA_ATTR_LOCATOR,
- (__force u64)ila->p.ip.locator) ||
- nla_put_u64(msg, ILA_ATTR_LOCATOR_MATCH,
- (__force u64)ila->p.ip.locator_match) ||
- nla_put_s32(msg, ILA_ATTR_IFINDEX, ila->p.ifindex) ||
- nla_put_u32(msg, ILA_ATTR_DIR, ila->p.dir))
+ if (nla_put_u64_64bit(msg, ILA_ATTR_LOCATOR,
+ (__force u64)ila->xp.ip.locator.v64,
+ ILA_ATTR_PAD) ||
+ nla_put_u64_64bit(msg, ILA_ATTR_LOCATOR_MATCH,
+ (__force u64)ila->xp.ip.locator_match.v64,
+ ILA_ATTR_PAD) ||
+ nla_put_s32(msg, ILA_ATTR_IFINDEX, ila->xp.ifindex) ||
+ nla_put_u32(msg, ILA_ATTR_CSUM_MODE, ila->xp.ip.csum_mode))
return -1;
return 0;
@@ -457,11 +440,11 @@ static int ila_nl_cmd_get_mapping(struct sk_buff *skb, struct genl_info *info)
struct net *net = genl_info_net(info);
struct ila_net *ilan = net_generic(net, ila_net_id);
struct sk_buff *msg;
- struct ila_xlat_params p;
+ struct ila_xlat_params xp;
struct ila_map *ila;
int ret;
- ret = parse_nl_config(info, &p);
+ ret = parse_nl_config(info, &xp);
if (ret)
return ret;
@@ -471,7 +454,7 @@ static int ila_nl_cmd_get_mapping(struct sk_buff *skb, struct genl_info *info)
rcu_read_lock();
- ila = ila_lookup_by_params(&p, ilan);
+ ila = ila_lookup_by_params(&xp, ilan);
if (ila) {
ret = ila_dump_info(ila,
info->snd_portid,
@@ -501,7 +484,8 @@ static int ila_nl_dump_start(struct netlink_callback *cb)
struct ila_net *ilan = net_generic(net, ila_net_id);
struct ila_dump_iter *iter = (struct ila_dump_iter *)cb->args;
- return rhashtable_walk_init(&ilan->rhash_table, &iter->rhiter);
+ return rhashtable_walk_init(&ilan->rhash_table, &iter->rhiter,
+ GFP_KERNEL);
}
static int ila_nl_dump_done(struct netlink_callback *cb)
@@ -613,45 +597,32 @@ static struct pernet_operations ila_net_ops = {
.size = sizeof(struct ila_net),
};
-static int ila_xlat_addr(struct sk_buff *skb, int dir)
+static int ila_xlat_addr(struct sk_buff *skb)
{
struct ila_map *ila;
struct ipv6hdr *ip6h = ipv6_hdr(skb);
struct net *net = dev_net(skb->dev);
struct ila_net *ilan = net_generic(net, ila_net_id);
- __be64 identifier, locator_match;
- size_t nhoff;
+ struct ila_addr *iaddr = ila_a2i(&ip6h->daddr);
/* Assumes skb contains a valid IPv6 header that is pulled */
- identifier = *(__be64 *)&ip6h->daddr.in6_u.u6_addr8[8];
- locator_match = *(__be64 *)&ip6h->daddr.in6_u.u6_addr8[0];
- nhoff = sizeof(struct ipv6hdr);
+ if (!ila_addr_is_ila(iaddr)) {
+ /* Type indicates this is not an ILA address */
+ return 0;
+ }
rcu_read_lock();
- ila = ila_lookup_wildcards(identifier, locator_match,
- skb->dev->ifindex, dir, ilan);
+ ila = ila_lookup_wildcards(iaddr, skb->dev->ifindex, ilan);
if (ila)
- update_ipv6_locator(skb, &ila->p.ip);
+ ila_update_ipv6_locator(skb, &ila->xp.ip);
rcu_read_unlock();
return 0;
}
-int ila_xlat_incoming(struct sk_buff *skb)
-{
- return ila_xlat_addr(skb, ILA_DIR_IN);
-}
-EXPORT_SYMBOL(ila_xlat_incoming);
-
-int ila_xlat_outgoing(struct sk_buff *skb)
-{
- return ila_xlat_addr(skb, ILA_DIR_OUT);
-}
-EXPORT_SYMBOL(ila_xlat_outgoing);
-
int ila_xlat_init(void)
{
int ret;
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-22 08:52:27 +0300