Date: Mon, 6 May 2019 21:31:03 +0000 (UTC) From: Eric Joyner <erj@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r347213 - in stable/11: share/man/man9 sys/net sys/sys Message-ID: <201905062131.x46LV30W075187@repo.freebsd.org>
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Author: erj Date: Mon May 6 21:31:02 2019 New Revision: 347213 URL: https://svnweb.freebsd.org/changeset/base/347213 Log: MFC r345312: iflib: mark isc_driver_version as constant (Additional comment by erj: This also adds a new sysctl_add_oid macro, SYSCTL_ADD_CONST_STRING, for displaying const strings. This commit also includes an edit to the sysctl.9 man page for it.) Sponsored by: Intel Corporation Modified: stable/11/share/man/man9/sysctl.9 stable/11/sys/net/iflib.c stable/11/sys/net/iflib.h stable/11/sys/sys/sysctl.h Directory Properties: stable/11/ (props changed) Modified: stable/11/share/man/man9/sysctl.9 ============================================================================== --- stable/11/share/man/man9/sysctl.9 Mon May 6 21:21:15 2019 (r347212) +++ stable/11/share/man/man9/sysctl.9 Mon May 6 21:31:02 2019 (r347213) @@ -42,6 +42,7 @@ .Nm SYSCTL_ADD_S32 , .Nm SYSCTL_ADD_S64 , .Nm SYSCTL_ADD_STRING , +.Nm SYSCTL_ADD_CONST_STRING , .Nm SYSCTL_ADD_STRUCT , .Nm SYSCTL_ADD_U8 , .Nm SYSCTL_ADD_U16 , @@ -67,6 +68,7 @@ .Nm SYSCTL_S32 , .Nm SYSCTL_S64 , .Nm SYSCTL_STRING , +.Nm SYSCTL_CONST_STRING , .Nm SYSCTL_STRUCT , .Nm SYSCTL_U8 , .Nm SYSCTL_U16 , @@ -211,6 +213,16 @@ .Fa "const char *descr" .Fc .Ft struct sysctl_oid * +.Fo SYSCTL_ADD_CONST_STRING +.Fa "struct sysctl_ctx_list *ctx" +.Fa "struct sysctl_oid_list *parent" +.Fa "int number" +.Fa "const char *name" +.Fa "int ctlflags" +.Fa "const char *ptr" +.Fa "const char *descr" +.Fc +.Ft struct sysctl_oid * .Fo SYSCTL_ADD_STRUCT .Fa "struct sysctl_ctx_list *ctx" .Fa "struct sysctl_oid_list *parent" @@ -335,6 +347,7 @@ .Fn SYSCTL_S32 parent number name ctlflags ptr val descr .Fn SYSCTL_S64 parent number name ctlflags ptr val descr .Fn SYSCTL_STRING parent number name ctlflags arg len descr +.Fn SYSCTL_CONST_STRING parent number name ctlflags arg descr .Fn SYSCTL_STRUCT parent number name ctlflags ptr struct_type descr .Fn SYSCTL_U8 parent number name ctlflags ptr val descr .Fn SYSCTL_U16 parent number name ctlflags ptr val descr @@ -484,6 +497,11 @@ If the .Fa len argument in zero, the string length is computed at every access to the OID using .Xr strlen 3 . +Use the +.Fn SYSCTL_CONST_STRING +macro or the +.Fn SYSCTL_ADD_CONST_STRING +function to add a sysctl for a constant string. .Sh CREATING OPAQUE SYSCTLS The .Fn SYSCTL_OPAQUE @@ -528,6 +546,7 @@ Static sysctls are declared using one of the .Fn SYSCTL_S32 , .Fn SYSCTL_S64 , .Fn SYSCTL_STRING , +.Fn SYSCTL_CONST_STRING , .Fn SYSCTL_STRUCT , .Fn SYSCTL_U8 , .Fn SYSCTL_U16 , @@ -552,6 +571,7 @@ Dynamic nodes are created using one of the .Fn SYSCTL_ADD_S32 , .Fn SYSCTL_ADD_S64 , .Fn SYSCTL_ADD_STRING , +.Fn SYSCTL_ADD_CONST_STRING , .Fn SYSCTL_ADD_STRUCT , .Fn SYSCTL_ADD_U8 , .Fn SYSCTL_ADD_U16 , Modified: stable/11/sys/net/iflib.c ============================================================================== --- stable/11/sys/net/iflib.c Mon May 6 21:21:15 2019 (r347212) +++ stable/11/sys/net/iflib.c Mon May 6 21:31:02 2019 (r347213) @@ -5844,8 +5844,8 @@ iflib_add_device_sysctl_pre(if_ctx_t ctx) CTLFLAG_RD, NULL, "IFLIB fields"); oid_list = SYSCTL_CHILDREN(node); - SYSCTL_ADD_STRING(ctx_list, oid_list, OID_AUTO, "driver_version", - CTLFLAG_RD, ctx->ifc_sctx->isc_driver_version, 0, + SYSCTL_ADD_CONST_STRING(ctx_list, oid_list, OID_AUTO, "driver_version", + CTLFLAG_RD, ctx->ifc_sctx->isc_driver_version, "driver version"); SYSCTL_ADD_U16(ctx_list, oid_list, OID_AUTO, "override_ntxqs", Modified: stable/11/sys/net/iflib.h ============================================================================== --- stable/11/sys/net/iflib.h Mon May 6 21:21:15 2019 (r347212) +++ stable/11/sys/net/iflib.h Mon May 6 21:31:02 2019 (r347213) @@ -242,7 +242,7 @@ struct if_shared_ctx { /* fields necessary for probe */ pci_vendor_info_t *isc_vendor_info; - char *isc_driver_version; + const char *isc_driver_version; /* optional function to transform the read values to match the table*/ void (*isc_parse_devinfo) (uint16_t *device_id, uint16_t *subvendor_id, uint16_t *subdevice_id, uint16_t *rev_id); Modified: stable/11/sys/sys/sysctl.h ============================================================================== --- stable/11/sys/sys/sysctl.h Mon May 6 21:21:15 2019 (r347212) +++ stable/11/sys/sys/sysctl.h Mon May 6 21:31:02 2019 (r347213) @@ -333,6 +333,24 @@ TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry); __arg, len, sysctl_handle_string, "A", __DESCR(descr)); \ }) +/* Oid for a constant '\0' terminated string. */ +#define SYSCTL_CONST_STRING(parent, nbr, name, access, arg, descr) \ + SYSCTL_OID(parent, nbr, name, CTLTYPE_STRING|(access), \ + __DECONST(char *, arg), 0, sysctl_handle_string, "A", descr); \ + CTASSERT(!(access & CTLFLAG_WR)); \ + CTASSERT(((access) & CTLTYPE) == 0 || \ + ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING) + +#define SYSCTL_ADD_CONST_STRING(ctx, parent, nbr, name, access, arg, descr) \ +({ \ + char *__arg = __DECONST(char *, arg); \ + CTASSERT(!(access & CTLFLAG_WR)); \ + CTASSERT(((access) & CTLTYPE) == 0 || \ + ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_STRING); \ + sysctl_add_oid(ctx, parent, nbr, name, CTLTYPE_STRING|(access), \ + __arg, 0, sysctl_handle_string, "A", __DESCR(descr)); \ +}) + /* Oid for a bool. If ptr is NULL, val is returned. */ #define SYSCTL_NULL_BOOL_PTR ((bool *)NULL) #define SYSCTL_BOOL(parent, nbr, name, access, ptr, val, descr) \
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