Date: Tue, 5 Sep 2017 05:28:52 +0000 (UTC) From: Sepherosa Ziehau <sephe@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r323170 - in head/sys: net sys Message-ID: <201709050528.v855Sqdb075097@repo.freebsd.org>
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Author: sephe Date: Tue Sep 5 05:28:52 2017 New Revision: 323170 URL: https://svnweb.freebsd.org/changeset/base/323170 Log: if: Add ioctls to get RSS key and hash type/function. It will be needed by hn(4) to configure its RSS key and hash type/function in the transparent VF mode in order to match VF's RSS settings. The description of the transparent VF mode and the RSS hash value issue are here: https://svnweb.freebsd.org/base?view=revision&revision=322299 https://svnweb.freebsd.org/base?view=revision&revision=322485 These are generic enough to promise two independent IOCs instead of abusing SIOCGDRVSPEC. Setting RSS key and hash type/function is a different story, which probably requires more discussion. Comment about UDP_{IPV4,IPV6,IPV6_EX} were only in the patch in the review request; these hash types are standardized now. Reviewed by: gallatin MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D12174 Modified: head/sys/net/if.c head/sys/net/if.h head/sys/sys/sockio.h Modified: head/sys/net/if.c ============================================================================== --- head/sys/net/if.c Tue Sep 5 01:40:53 2017 (r323169) +++ head/sys/net/if.c Tue Sep 5 05:28:52 2017 (r323170) @@ -2661,6 +2661,8 @@ ifhwioctl(u_long cmd, struct ifnet *ifp, caddr_t data, case SIOCGIFMEDIA: case SIOCGIFXMEDIA: case SIOCGIFGENERIC: + case SIOCGIFRSSKEY: + case SIOCGIFRSSHASH: if (ifp->if_ioctl == NULL) return (EOPNOTSUPP); error = (*ifp->if_ioctl)(ifp, cmd, data); Modified: head/sys/net/if.h ============================================================================== --- head/sys/net/if.h Tue Sep 5 01:40:53 2017 (r323169) +++ head/sys/net/if.h Tue Sep 5 05:28:52 2017 (r323170) @@ -526,6 +526,42 @@ struct ifi2creq { uint8_t data[8]; /* read buffer */ }; +/* + * RSS hash. + */ + +#define RSS_FUNC_NONE 0 /* RSS disabled */ +#define RSS_FUNC_PRIVATE 1 /* non-standard */ +#define RSS_FUNC_TOEPLITZ 2 + +#define RSS_TYPE_IPV4 0x00000001 +#define RSS_TYPE_TCP_IPV4 0x00000002 +#define RSS_TYPE_IPV6 0x00000004 +#define RSS_TYPE_IPV6_EX 0x00000008 +#define RSS_TYPE_TCP_IPV6 0x00000010 +#define RSS_TYPE_TCP_IPV6_EX 0x00000020 +#define RSS_TYPE_UDP_IPV4 0x00000040 +#define RSS_TYPE_UDP_IPV6 0x00000080 +#define RSS_TYPE_UDP_IPV6_EX 0x00000100 + +#define RSS_KEYLEN 128 + +struct ifrsskey { + char ifrk_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + uint8_t ifrk_func; /* RSS_FUNC_ */ + uint8_t ifrk_spare0; + uint16_t ifrk_keylen; + uint8_t ifrk_key[RSS_KEYLEN]; +}; + +struct ifrsshash { + char ifrh_name[IFNAMSIZ]; /* if name, e.g. "en0" */ + uint8_t ifrh_func; /* RSS_FUNC_ */ + uint8_t ifrh_spare0; + uint16_t ifrh_spare1; + uint32_t ifrh_types; /* RSS_TYPE_ */ +}; + #endif /* __BSD_VISIBLE */ #ifdef _KERNEL Modified: head/sys/sys/sockio.h ============================================================================== --- head/sys/sys/sockio.h Tue Sep 5 01:40:53 2017 (r323169) +++ head/sys/sys/sockio.h Tue Sep 5 05:28:52 2017 (r323170) @@ -134,4 +134,8 @@ #define SIOCGIFGMEMB _IOWR('i', 138, struct ifgroupreq) /* get members */ #define SIOCGIFXMEDIA _IOWR('i', 139, struct ifmediareq) /* get net xmedia */ +#define SIOCGIFRSSKEY _IOWR('i', 150, struct ifrsskey)/* get RSS key */ +#define SIOCGIFRSSHASH _IOWR('i', 151, struct ifrsshash)/* get the current RSS + type/func settings */ + #endif /* !_SYS_SOCKIO_H_ */
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