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path: root/tools/tools/netmap/pkt_hash.c
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Diffstat (limited to 'tools/tools/netmap/pkt_hash.c')
-rw-r--r--tools/tools/netmap/pkt_hash.c52
1 files changed, 26 insertions, 26 deletions
diff --git a/tools/tools/netmap/pkt_hash.c b/tools/tools/netmap/pkt_hash.c
index 73bd023d81ac..949a7e9a5370 100644
--- a/tools/tools/netmap/pkt_hash.c
+++ b/tools/tools/netmap/pkt_hash.c
@@ -145,7 +145,7 @@ static uint32_t decode_gre_hash(const uint8_t *, uint8_t, uint8_t);
** Parser + hash function for the IPv4 packet
**/
static uint32_t
-decode_ip_n_hash(struct ip *iph, uint8_t hash_split, uint8_t seed)
+decode_ip_n_hash(const struct ip *iph, uint8_t hash_split, uint8_t seed)
{
uint32_t rc = 0;
@@ -155,19 +155,19 @@ decode_ip_n_hash(struct ip *iph, uint8_t hash_split, uint8_t seed)
ntohs(0xFFFD) + seed,
ntohs(0xFFFE) + seed);
} else {
- struct tcphdr *tcph = NULL;
- struct udphdr *udph = NULL;
+ const struct tcphdr *tcph = NULL;
+ const struct udphdr *udph = NULL;
switch (iph->ip_p) {
case IPPROTO_TCP:
- tcph = (struct tcphdr *)((uint8_t *)iph + (iph->ip_hl<<2));
+ tcph = (const struct tcphdr *)((const uint8_t *)iph + (iph->ip_hl<<2));
rc = sym_hash_fn(ntohl(iph->ip_src.s_addr),
ntohl(iph->ip_dst.s_addr),
ntohs(tcph->th_sport) + seed,
ntohs(tcph->th_dport) + seed);
break;
case IPPROTO_UDP:
- udph = (struct udphdr *)((uint8_t *)iph + (iph->ip_hl<<2));
+ udph = (const struct udphdr *)((const uint8_t *)iph + (iph->ip_hl<<2));
rc = sym_hash_fn(ntohl(iph->ip_src.s_addr),
ntohl(iph->ip_dst.s_addr),
ntohs(udph->uh_sport) + seed,
@@ -175,11 +175,11 @@ decode_ip_n_hash(struct ip *iph, uint8_t hash_split, uint8_t seed)
break;
case IPPROTO_IPIP:
/* tunneling */
- rc = decode_ip_n_hash((struct ip *)((uint8_t *)iph + (iph->ip_hl<<2)),
+ rc = decode_ip_n_hash((const struct ip *)((const uint8_t *)iph + (iph->ip_hl<<2)),
hash_split, seed);
break;
case IPPROTO_GRE:
- rc = decode_gre_hash((uint8_t *)iph + (iph->ip_hl<<2),
+ rc = decode_gre_hash((const uint8_t *)iph + (iph->ip_hl<<2),
hash_split, seed);
break;
case IPPROTO_ICMP:
@@ -205,7 +205,7 @@ decode_ip_n_hash(struct ip *iph, uint8_t hash_split, uint8_t seed)
** Parser + hash function for the IPv6 packet
**/
static uint32_t
-decode_ipv6_n_hash(struct ip6_hdr *ipv6h, uint8_t hash_split, uint8_t seed)
+decode_ipv6_n_hash(const struct ip6_hdr *ipv6h, uint8_t hash_split, uint8_t seed)
{
uint32_t saddr, daddr;
uint32_t rc = 0;
@@ -226,19 +226,19 @@ decode_ipv6_n_hash(struct ip6_hdr *ipv6h, uint8_t hash_split, uint8_t seed)
ntohs(0xFFFD) + seed,
ntohs(0xFFFE) + seed);
} else {
- struct tcphdr *tcph = NULL;
- struct udphdr *udph = NULL;
+ const struct tcphdr *tcph = NULL;
+ const struct udphdr *udph = NULL;
switch(ntohs(ipv6h->ip6_ctlun.ip6_un1.ip6_un1_nxt)) {
case IPPROTO_TCP:
- tcph = (struct tcphdr *)(ipv6h + 1);
+ tcph = (const struct tcphdr *)(ipv6h + 1);
rc = sym_hash_fn(ntohl(saddr),
ntohl(daddr),
ntohs(tcph->th_sport) + seed,
ntohs(tcph->th_dport) + seed);
break;
case IPPROTO_UDP:
- udph = (struct udphdr *)(ipv6h + 1);
+ udph = (const struct udphdr *)(ipv6h + 1);
rc = sym_hash_fn(ntohl(saddr),
ntohl(daddr),
ntohs(udph->uh_sport) + seed,
@@ -246,16 +246,16 @@ decode_ipv6_n_hash(struct ip6_hdr *ipv6h, uint8_t hash_split, uint8_t seed)
break;
case IPPROTO_IPIP:
/* tunneling */
- rc = decode_ip_n_hash((struct ip *)(ipv6h + 1),
+ rc = decode_ip_n_hash((const struct ip *)(ipv6h + 1),
hash_split, seed);
break;
case IPPROTO_IPV6:
/* tunneling */
- rc = decode_ipv6_n_hash((struct ip6_hdr *)(ipv6h + 1),
+ rc = decode_ipv6_n_hash((const struct ip6_hdr *)(ipv6h + 1),
hash_split, seed);
break;
case IPPROTO_GRE:
- rc = decode_gre_hash((uint8_t *)(ipv6h + 1), hash_split, seed);
+ rc = decode_gre_hash((const uint8_t *)(ipv6h + 1), hash_split, seed);
break;
case IPPROTO_ICMP:
case IPPROTO_ESP:
@@ -280,7 +280,7 @@ decode_ipv6_n_hash(struct ip6_hdr *ipv6h, uint8_t hash_split, uint8_t seed)
* * (See decode_vlan_n_hash & pkt_hdr_hash functions).
* */
static uint32_t
-decode_others_n_hash(struct ether_header *ethh, uint8_t seed)
+decode_others_n_hash(const struct ether_header *ethh, uint8_t seed)
{
uint32_t saddr, daddr, rc;
@@ -305,18 +305,18 @@ decode_others_n_hash(struct ether_header *ethh, uint8_t seed)
** Parser + hash function for VLAN packet
**/
static inline uint32_t
-decode_vlan_n_hash(struct ether_header *ethh, uint8_t hash_split, uint8_t seed)
+decode_vlan_n_hash(const struct ether_header *ethh, uint8_t hash_split, uint8_t seed)
{
uint32_t rc = 0;
- struct vlanhdr *vhdr = (struct vlanhdr *)(ethh + 1);
+ const struct vlanhdr *vhdr = (const struct vlanhdr *)(ethh + 1);
switch (ntohs(vhdr->proto)) {
case ETHERTYPE_IP:
- rc = decode_ip_n_hash((struct ip *)(vhdr + 1),
+ rc = decode_ip_n_hash((const struct ip *)(vhdr + 1),
hash_split, seed);
break;
case ETHERTYPE_IPV6:
- rc = decode_ipv6_n_hash((struct ip6_hdr *)(vhdr + 1),
+ rc = decode_ipv6_n_hash((const struct ip6_hdr *)(vhdr + 1),
hash_split, seed);
break;
case ETHERTYPE_ARP:
@@ -336,15 +336,15 @@ uint32_t
pkt_hdr_hash(const unsigned char *buffer, uint8_t hash_split, uint8_t seed)
{
uint32_t rc = 0;
- struct ether_header *ethh = (struct ether_header *)buffer;
+ const struct ether_header *ethh = (const struct ether_header *)buffer;
switch (ntohs(ethh->ether_type)) {
case ETHERTYPE_IP:
- rc = decode_ip_n_hash((struct ip *)(ethh + 1),
+ rc = decode_ip_n_hash((const struct ip *)(ethh + 1),
hash_split, seed);
break;
case ETHERTYPE_IPV6:
- rc = decode_ipv6_n_hash((struct ip6_hdr *)(ethh + 1),
+ rc = decode_ipv6_n_hash((const struct ip6_hdr *)(ethh + 1),
hash_split, seed);
break;
case ETHERTYPE_VLAN:
@@ -372,15 +372,15 @@ decode_gre_hash(const uint8_t *grehdr, uint8_t hash_split, uint8_t seed)
!!(*grehdr & 2) + /* Routing */
!!(*grehdr & 4) + /* Key */
!!(*grehdr & 8)); /* Sequence Number */
- uint16_t proto = ntohs(*(uint16_t *)(void *)(grehdr + 2));
+ uint16_t proto = ntohs(*(const uint16_t *)(const void *)(grehdr + 2));
switch (proto) {
case ETHERTYPE_IP:
- rc = decode_ip_n_hash((struct ip *)(grehdr + len),
+ rc = decode_ip_n_hash((const struct ip *)(grehdr + len),
hash_split, seed);
break;
case ETHERTYPE_IPV6:
- rc = decode_ipv6_n_hash((struct ip6_hdr *)(grehdr + len),
+ rc = decode_ipv6_n_hash((const struct ip6_hdr *)(grehdr + len),
hash_split, seed);
break;
case 0x6558: /* Transparent Ethernet Bridging */
generated by cgit v1.2.3 (git 2.25.1) at 2023-03-31 03:03:24 +0000