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Date: Thu, 14 Dec 2017 21:29:15 -0800 From: Jakub Kicinski <jakub.kicinski@...ronome.com> To: netdev@...r.kernel.org Cc: oss-drivers@...ronome.com, daniel@...earbox.net, alexei.starovoitov@...il.com, Jakub Kicinski <jakub.kicinski@...ronome.com> Subject: [PATCH bpf-next 1/5] nfp: add nfp_cpp_area_size() accessor Allow users outside of core reading area sizes. This was not needed previously because whatever entity created the area would usually know what size it asked for. The nfp_rtsym_map() helper, however, will allocate the area based on the size of an RT-symbol with given name. Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com> --- drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpp.h | 1 + drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c | 11 +++++++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpp.h b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpp.h index 5798adc57cbc..c8f2c064cce3 100644 --- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpp.h +++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cpp.h @@ -242,6 +242,7 @@ int nfp_cpp_area_read(struct nfp_cpp_area *area, unsigned long offset, void *buffer, size_t length); int nfp_cpp_area_write(struct nfp_cpp_area *area, unsigned long offset, const void *buffer, size_t length); +size_t nfp_cpp_area_size(struct nfp_cpp_area *area); const char *nfp_cpp_area_name(struct nfp_cpp_area *cpp_area); void *nfp_cpp_area_priv(struct nfp_cpp_area *cpp_area); struct nfp_cpp *nfp_cpp_area_cpp(struct nfp_cpp_area *cpp_area); diff --git a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c index 3fcb522d2e85..28262470dabf 100644 --- a/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c +++ b/drivers/net/ethernet/netronome/nfp/nfpcore/nfp_cppcore.c @@ -567,6 +567,17 @@ int nfp_cpp_area_write(struct nfp_cpp_area *area, return area->cpp->op->area_write(area, kernel_vaddr, offset, length); } +/** + * nfp_cpp_area_size() - return size of a CPP area + * @cpp_area: CPP area handle + * + * Return: Size of the area + */ +size_t nfp_cpp_area_size(struct nfp_cpp_area *cpp_area) +{ + return cpp_area->size; +} + /** * nfp_cpp_area_name() - return name of a CPP area * @cpp_area: CPP area handle -- 2.15.1
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