git: 02ddb305cc6d - main - nvmf: Refactor nvmf_add_namespaces to be more generic
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Date: Wed, 05 Jun 2024 20:03:59 UTC
The branch main has been updated by jhb: URL: https://cgit.FreeBSD.org/src/commit/?id=02ddb305cc6d7fc3964e33985ae89501b99bb05b commit 02ddb305cc6d7fc3964e33985ae89501b99bb05b Author: John Baldwin <jhb@FreeBSD.org> AuthorDate: 2024-06-05 19:51:56 +0000 Commit: John Baldwin <jhb@FreeBSD.org> CommitDate: 2024-06-05 19:51:56 +0000 nvmf: Refactor nvmf_add_namespaces to be more generic Rename to nvmf_scan_active_namespaces and accept an additional callback function and callback argument. The callback is invoked on each active namespace enumerated by the active namespace list from the IDENTIFY command. Reviewed by: imp Sponsored by: Chelsio Communications Differential Revision: https://reviews.freebsd.org/D45458 --- sys/dev/nvmf/host/nvmf.c | 74 ++++++++++++++++++++++++++++++------------------ 1 file changed, 47 insertions(+), 27 deletions(-) diff --git a/sys/dev/nvmf/host/nvmf.c b/sys/dev/nvmf/host/nvmf.c index e43d438aaa8c..df07d70b6c86 100644 --- a/sys/dev/nvmf/host/nvmf.c +++ b/sys/dev/nvmf/host/nvmf.c @@ -295,9 +295,13 @@ nvmf_establish_connection(struct nvmf_softc *sc, struct nvmf_ivars *ivars) return (0); } +typedef bool nvmf_scan_active_ns_cb(struct nvmf_softc *, uint32_t, + const struct nvme_namespace_data *, void *); + static bool -nvmf_scan_nslist(struct nvmf_softc *sc, struct nvme_ns_list *nslist, - struct nvme_namespace_data *data, uint32_t *nsidp) +nvmf_scan_active_nslist(struct nvmf_softc *sc, struct nvme_ns_list *nslist, + struct nvme_namespace_data *data, uint32_t *nsidp, + nvmf_scan_active_ns_cb *cb, void *cb_arg) { struct nvmf_completion_status status; uint32_t nsid; @@ -333,13 +337,6 @@ nvmf_scan_nslist(struct nvmf_softc *sc, struct nvme_ns_list *nslist, return (true); } - if (sc->ns[nsid - 1] != NULL) { - device_printf(sc->dev, - "duplicate namespace %u in active namespace list\n", - nsid); - return (false); - } - nvmf_status_init(&status); nvmf_status_wait_io(&status); if (!nvmf_cmd_identify_namespace(sc, nsid, data, nvmf_complete, @@ -365,21 +362,9 @@ nvmf_scan_nslist(struct nvmf_softc *sc, struct nvme_ns_list *nslist, return (false); } - /* - * As in nvme_ns_construct, a size of zero indicates an - * invalid namespace. - */ nvme_namespace_data_swapbytes(data); - if (data->nsze == 0) { - device_printf(sc->dev, - "ignoring active namespace %u with zero size\n", - nsid); - continue; - } - - sc->ns[nsid - 1] = nvmf_init_ns(sc, nsid, data); - - nvmf_sim_rescan_ns(sc, nsid); + if (!cb(sc, nsid, data, cb_arg)) + return (false); } MPASS(nsid == nslist->ns[nitems(nslist->ns) - 1] && nsid != 0); @@ -392,22 +377,22 @@ nvmf_scan_nslist(struct nvmf_softc *sc, struct nvme_ns_list *nslist, } static bool -nvmf_add_namespaces(struct nvmf_softc *sc) +nvmf_scan_active_namespaces(struct nvmf_softc *sc, nvmf_scan_active_ns_cb *cb, + void *cb_arg) { struct nvme_namespace_data *data; struct nvme_ns_list *nslist; uint32_t nsid; bool retval; - sc->ns = mallocarray(sc->cdata->nn, sizeof(*sc->ns), M_NVMF, - M_WAITOK | M_ZERO); nslist = malloc(sizeof(*nslist), M_NVMF, M_WAITOK); data = malloc(sizeof(*data), M_NVMF, M_WAITOK); nsid = 0; retval = true; for (;;) { - if (!nvmf_scan_nslist(sc, nslist, data, &nsid)) { + if (!nvmf_scan_active_nslist(sc, nslist, data, &nsid, cb, + cb_arg)) { retval = false; break; } @@ -420,6 +405,41 @@ nvmf_add_namespaces(struct nvmf_softc *sc) return (retval); } +static bool +nvmf_add_ns(struct nvmf_softc *sc, uint32_t nsid, + const struct nvme_namespace_data *data, void *arg __unused) +{ + if (sc->ns[nsid - 1] != NULL) { + device_printf(sc->dev, + "duplicate namespace %u in active namespace list\n", + nsid); + return (false); + } + + /* + * As in nvme_ns_construct, a size of zero indicates an + * invalid namespace. + */ + if (data->nsze == 0) { + device_printf(sc->dev, + "ignoring active namespace %u with zero size\n", nsid); + return (true); + } + + sc->ns[nsid - 1] = nvmf_init_ns(sc, nsid, data); + + nvmf_sim_rescan_ns(sc, nsid); + return (true); +} + +static bool +nvmf_add_namespaces(struct nvmf_softc *sc) +{ + sc->ns = mallocarray(sc->cdata->nn, sizeof(*sc->ns), M_NVMF, + M_WAITOK | M_ZERO); + return (nvmf_scan_active_namespaces(sc, nvmf_add_ns, NULL)); +} + static int nvmf_attach(device_t dev) {