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sys/net/rss_config.h
- This file was copied from sys/netinet/in_rss.h.
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||||
* SUCH DAMAGE. | * SUCH DAMAGE. | ||||
* | * | ||||
* $FreeBSD: head/sys/netinet/in_rss.h 271297 2014-09-09 03:10:21Z adrian $ | * $FreeBSD: 271297 2014-09-09 03:10:21Z adrian $ | ||||
*/ | */ | ||||
#ifndef _NETINET_IN_RSS_H_ | #ifndef _NET_RSS_CONFIG_H_ | ||||
#define _NETINET_IN_RSS_H_ | #define _NET_RSS_CONFIG_H_ | ||||
#include <netinet/in.h> /* in_addr_t */ | |||||
/* | /* | ||||
* Supported RSS hash functions. | * Supported RSS hash functions. | ||||
*/ | */ | ||||
#define RSS_HASH_NAIVE 0x00000001 /* Poor but fast hash. */ | #define RSS_HASH_NAIVE 0x00000001 /* Poor but fast hash. */ | ||||
#define RSS_HASH_TOEPLITZ 0x00000002 /* Required by RSS. */ | #define RSS_HASH_TOEPLITZ 0x00000002 /* Required by RSS. */ | ||||
#define RSS_HASH_CRC32 0x00000004 /* Future; some NICs do it. */ | #define RSS_HASH_CRC32 0x00000004 /* Future; some NICs do it. */ | ||||
#define RSS_HASH_MASK (RSS_HASH_NAIVE | RSS_HASH_TOEPLITZ) | #define RSS_HASH_MASK (RSS_HASH_NAIVE | RSS_HASH_TOEPLITZ) | ||||
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* | * | ||||
* The default direction (INGRESS) is the "receive into the NIC" - ie, | * The default direction (INGRESS) is the "receive into the NIC" - ie, | ||||
* what the hardware is hashing on. | * what the hardware is hashing on. | ||||
*/ | */ | ||||
#define RSS_HASH_PKT_INGRESS 0 | #define RSS_HASH_PKT_INGRESS 0 | ||||
#define RSS_HASH_PKT_EGRESS 1 | #define RSS_HASH_PKT_EGRESS 1 | ||||
/* | /* | ||||
* Hash function - takes a data buffer and calculates the hash function | |||||
* over it. | |||||
*/ | |||||
uint32_t rss_hash(u_int datalen, const uint8_t *data); | |||||
/* | |||||
* The external RSS hash configuration value. | |||||
* This shouldn't be used directly; use the inline function instead. | |||||
*/ | |||||
extern uint32_t rss_hash_config_set; | |||||
static inline uint32_t | |||||
bz: Aeh, while I can see the point, the function will not allow you to abstract the KPI/KBI away… | |||||
rss_gethashconfig(void) | |||||
{ | |||||
return (rss_hash_config_set); | |||||
} | |||||
/* | |||||
* Device driver interfaces to query RSS properties that must be programmed | * Device driver interfaces to query RSS properties that must be programmed | ||||
* into hardware. | * into hardware. | ||||
*/ | */ | ||||
u_int rss_getbits(void); | u_int rss_getbits(void); | ||||
u_int rss_getbucket(u_int hash); | u_int rss_getbucket(u_int hash); | ||||
u_int rss_get_indirection_to_bucket(u_int index); | u_int rss_get_indirection_to_bucket(u_int index); | ||||
u_int rss_getcpu(u_int bucket); | u_int rss_getcpu(u_int bucket); | ||||
void rss_getkey(uint8_t *key); | void rss_getkey(uint8_t *key); | ||||
u_int rss_gethashalgo(void); | u_int rss_gethashalgo(void); | ||||
u_int rss_getnumbuckets(void); | u_int rss_getnumbuckets(void); | ||||
u_int rss_getnumcpus(void); | u_int rss_getnumcpus(void); | ||||
u_int rss_gethashconfig(void); | |||||
/* | /* | ||||
* Network stack interface to generate a hash for a protocol tuple. | |||||
*/ | |||||
uint32_t rss_hash_ip4_4tuple(struct in_addr src, u_short srcport, | |||||
struct in_addr dst, u_short dstport); | |||||
uint32_t rss_hash_ip4_2tuple(struct in_addr src, struct in_addr dst); | |||||
uint32_t rss_hash_ip6_4tuple(struct in6_addr src, u_short srcport, | |||||
struct in6_addr dst, u_short dstport); | |||||
uint32_t rss_hash_ip6_2tuple(struct in6_addr src, | |||||
struct in6_addr dst); | |||||
/* | |||||
* Network stack interface to query desired CPU affinity of a packet. | * Network stack interface to query desired CPU affinity of a packet. | ||||
*/ | */ | ||||
struct mbuf *rss_m2cpuid(struct mbuf *m, uintptr_t source, u_int *cpuid); | struct mbuf *rss_m2cpuid(struct mbuf *m, uintptr_t source, u_int *cpuid); | ||||
u_int rss_hash2cpuid(uint32_t hash_val, uint32_t hash_type); | u_int rss_hash2cpuid(uint32_t hash_val, uint32_t hash_type); | ||||
int rss_hash2bucket(uint32_t hash_val, uint32_t hash_type, | int rss_hash2bucket(uint32_t hash_val, uint32_t hash_type, | ||||
uint32_t *bucket_id); | uint32_t *bucket_id); | ||||
int rss_m2bucket(struct mbuf *m, uint32_t *bucket_id); | int rss_m2bucket(struct mbuf *m, uint32_t *bucket_id); | ||||
/* | #endif /* !_NET_RSS_CONFIG_H_ */ | ||||
* Functions to calculate a software RSS hash for a given mbuf or | |||||
* packet detail. | |||||
*/ | |||||
int rss_mbuf_software_hash_v4(const struct mbuf *m, int dir, | |||||
uint32_t *hashval, uint32_t *hashtype); | |||||
int rss_proto_software_hash_v4(struct in_addr src, | |||||
struct in_addr dst, u_short src_port, u_short dst_port, | |||||
int proto, uint32_t *hashval, | |||||
uint32_t *hashtype); | |||||
struct mbuf * rss_soft_m2cpuid(struct mbuf *m, uintptr_t source, | |||||
u_int *cpuid); | |||||
#endif /* !_NETINET_IN_RSS_H_ */ |
Aeh, while I can see the point, the function will not allow you to abstract the KPI/KBI away either this way (static inline ...). Just saying.